When 15 year-old Marlene Miller was murdered, it would take 24 years and several retrials before forensic scientists discovered the evidence to bring her killer to justice.

Detectives use a forged signature to find a woman's abductor.

A woman is killed two days before she was scheduled to testify against a man accused of assaulting her and the prime suspect has an alibi.

A bite mark is all the evidence needed to convict a suspect who was robbing tourists in Florida.

Technology able to analyze human bite-marks yields information on a woman's death.

A death in Pennsylvania is strikingly similar to one in North Carolina.

When a nurse starts experiencing a variety of flu-like symptoms, she discovers that she is HIV-positive; she learns that her infection was not accidental.

A young Texas teenager and her boyfriend are brutally attacked on Valentine's Day; she is found dead while her boyfriend escapes; the case goes cold for nearly 50 years before a new forensic test exposes a family man with a dark secret.

Three Indiana construction workers are found shot on a work site.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

He was a family-man, living in a New Jersey suburb with his wife and three kids but unbeknownst to his neighbors, Richard Kuklinski held a dark secret: he was the Iceman, a cold-blooded killer.

For many years, the Iceman, Richard Kuklinski, had literally gotten away with murder, but investigators were on to him; there was very little evidence, connecting the Iceman to his crimes.

A string of horrifying fires plagues California in the Eighties and Nineties, one of them fatally trapping four people inside.

In a race against time, investigators hunt for an arsonist setting devastating fires across California; to their complete shock, the man responsible turns out to be none other than renowned fire investigator Captain John Orr.

time of death becomes pivotal when a pregnant woman is found murdered in her air-conditioned bedroom.

An obscure print found at a crime scene.

A diner in a small town, an endocrinologist and a forensic botanist help destroy a prime suspect's alibi.

Neighbors do not hear the gunshots when a union official is killed in his home.

A man tells police he shot an intruder who murdered his wife; forensic evidence leads police to re-examine the man's motives.

A police officer claims his estranged wife's shooting death was a suicide, but investigators think it was a murder.

When fire fighters find a family dead inside their home, it appears to be a murder-suicide; clues at the scene lead investigators to believe otherwise.

A couple's murder leads investigators into the world of white supremacists and a string of hate crimes.

A rare gun and a victim's beloved dog help investigators trying to solve a multi-year long murder case where most of the witnesses were admitted drug users.

A search in Virginia's DNA databank reveals the identity of a news producer's murderer.

A homicide detective claims his wife accidentally shot herself in the head, but the evidence indicates otherwise.

Officials probe the death of a woman investigating the possible side effects of the drug she was prescribed for bipolar disorder.

A chip of stainless steel brings a killer to justice 20 years after a woman's body is found in a ravine.

An 11-year-old girl is sexually assaulted and shot twice at close range.

A woman is killed weeks before testifying against the man who sexually assaulted her.

New York police hunt the Zodiac killer after a series of deadly attacks.

When a healthy young man dies mysteriously in his sleep, toxicology tests reveal that it may have been foul play. Could a `suicide note' hold the key to solving the case.

A child's memory, a diary and a forensic psychologist help investigators solve a young woman's murder.

A man tells police he shot an intruder who murdered his wife; forensic evidence leads police to re-examine the man's motives.

A police officer claims his estranged wife's shooting death was a suicide, but investigators think it was a murder.

When fire fighters find a family dead inside their home, it appears to be a murder-suicide; clues at the scene lead investigators to believe otherwise.

A couple's murder leads investigators into the world of white supremacists and a string of hate crimes.

A rare gun and a victim's beloved dog help investigators trying to solve a multi-year long murder case where most of the witnesses were admitted drug users.

A search in Virginia's DNA databank reveals the identity of a news producer's murderer.

A homicide detective claims his wife accidentally shot herself in the head, but the evidence indicates otherwise.

Officials probe the death of a woman investigating the possible side effects of the drug she was prescribed for bipolar disorder.

A chip of stainless steel brings a killer to justice 20 years after a woman's body is found in a ravine.

An 11-year-old girl is sexually assaulted and shot twice at close range.

A woman is killed weeks before testifying against the man who sexually assaulted her.

New York police hunt the Zodiac killer after a series of deadly attacks.

When a healthy young man dies mysteriously in his sleep, toxicology tests reveal that it may have been foul play. Could a `suicide note' hold the key to solving the case.

A child's memory, a diary and a forensic psychologist help investigators solve a young woman's murder.

A Texan who vows to live a reformed life after being released from prison is subsequently convicted of murder, despite insisting his innocence, so he uses forensic science from behind bars to try to prove his case.

An extremely successful California career woman keeps falling ill and doctors can't determine why, then after she dies they still have no explanation until they find a key figure in her life has been lying about his past.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Kobe Bryant's helicopter crash on Jan. 26, 2020, kills all nine people on board, including his daughter Gigi, and leaves the world searching for answers.

Kobe Bryant's helicopter crash on Jan. 26, 2020, kills all nine people on board, including his daughter Gigi, and leaves the world searching for answers.

The unpredictable outcome of Tom and Jackie Hawks' disappearance in November 2004 after two years of following their dreams and sailing the Pacific to exotic ports.

A woman is murdered inside her Hollywood home just before her date with actor Ashton Kutcher; as detectives search for answers, her friends relay stories about a strange air conditioning repairman who would show up uninvited at her home.

Investigators weigh several theories while probing the death of a retired police officer, including a botched robbery and suicide.

The bodies of two young women are found in the ashes of an apartment fire.

Two different men report the murder of a single mother and when the case's other anomalies stall the police, a candy wrapper and seeds help expose the killer.

After a Connecticut man's body is found in a burning rental car on a Mexican highway, an insurance company suspects a scam.

When a pipe bomb rips through a rural home, killing a young man and seriously injuring his mother, detectives hope that the remnants of a mailing label will lead them to a killer.

A quiet residential community, shattered by the murder of a neighbor. See how modern techniques helped investigators catch the culprit in less than 12 hours.

A man is found dead in his Michigan auto-salvage shop.

A man is murdered in a drive-by shooting. When a mobile phone trace incriminates a killer, it's up to a forensic geologist to find evidence that he was at the scene.

When a teenage girl is found dead, her boyfriend confesses to her murder. However, in a strange twist, so does another man; police must determine which is the killer.

A high school gym teacher gives his friend a ride home but never returns; his wife and friend receive letters saying he started a new life, but they suspect foul play despite no body being discovered.

A 16-year-old girl is killed in her own home by her mother and father. Her parents said they acted in self-defense, but the forensic evidence indicates otherwise.

Investigators determine if a computer crash which almost ruined a manufacturing company was accidental or deliberate sabotage.

Car with three Secret Service agents collides with local deputy's car; investigation launched into who was responsible for the deadly car accident finds two very different conclusions.

The derailment of the Sunset Limited was the deadliest train crash in U.S. history killing 47 passengers and crew with several more injured.

Arson investigators attempt to determine the cause of the 1987 fire at the Kings Cross Underground Station in London.

A discarded sleeping bag, containing bloody sneakers and a purse, leads police to the body of a young woman; a mark found on the victim's body enables police to track the killer.

A woman's apparent accidental death begins to look fishy after police uncover a letter written by the victim days before her untimely death.

An Alaskan trooper finds a woman's body beside a frozen road, but evidence is scant even after a suspected murder weapon is found.

When a pipe bomb rips through a rural home, killing a young man and seriously injuring his mother, detectives hope that the remnants of a mailing label will lead them to a killer.

A quiet residential community, shattered by the murder of a neighbor. See how modern techniques helped investigators catch the culprit in less than 12 hours.

A man is found dead in his Michigan auto-salvage shop.

A man is murdered in a drive-by shooting. When a mobile phone trace incriminates a killer, it's up to a forensic geologist to find evidence that he was at the scene.

When a teenage girl is found dead, her boyfriend confesses to her murder. However, in a strange twist, so does another man; police must determine which is the killer.

A high school gym teacher gives his friend a ride home but never returns; his wife and friend receive letters saying he started a new life, but they suspect foul play despite no body being discovered.

A 16-year-old girl is killed in her own home by her mother and father. Her parents said they acted in self-defense, but the forensic evidence indicates otherwise.

Investigators determine if a computer crash which almost ruined a manufacturing company was accidental or deliberate sabotage.

Car with three Secret Service agents collides with local deputy's car; investigation launched into who was responsible for the deadly car accident finds two very different conclusions.

The derailment of the Sunset Limited was the deadliest train crash in U.S. history killing 47 passengers and crew with several more injured.

Arson investigators attempt to determine the cause of the 1987 fire at the Kings Cross Underground Station in London.

A discarded sleeping bag, containing bloody sneakers and a purse, leads police to the body of a young woman; a mark found on the victim's body enables police to track the killer.

A woman's apparent accidental death begins to look fishy after police uncover a letter written by the victim days before her untimely death.

An Alaskan trooper finds a woman's body beside a frozen road, but evidence is scant even after a suspected murder weapon is found.

The body of a 24-year-old criminology student is found wrapped in a blanket alongside a desolate road in Brooklyn, N.Y.; police discover that the bouncer at a bar is her killer.

When a 79-year-old woman is found shot to death in her home, investigators initially suspect her husband or a violent neighbor; shell casings recovered at the scene and a high-tech database reveal an unlikely killer.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Stephen Paddock lived the lifestyle of the rich and famous in Las Vegas until he killed fifty-eight people in October 2017.

When five family members are found brutally murdered in the small Okla. city of Broken Arrow, police search for a mass murder.

Savanna Greywind couldn't wait to be a mom, but just before her baby is due, the pregnant 22-year-old disappears from her own apartment; when the baby turns up alive, the investigation reveals a suspect close to home.

A mysterious tip leads police in Moore, Oklahoma to the Super 8 hotel; inside Room 120, they find a missing teenage boy, a box of condoms, lotion-and a married state senator.

Police link a clump of hair discovered in an isolated area with a woman who disappeared 20 years ago.

A news anchor is shot to death outside her home in an apparent crime of passion by a fan; a police dog tracks the scent of the killer back to the crime scene.

A fire, caused by an unattended cigarette, kills the estranged wife of a police officer; forensic scientists discover that the cause is far more complicated.

A trio of men, responsible for several bank robberies, leaves no evidence behind; forensic scientists help catch them by looking at the criminals' posture and clothing.

When a woman's bone marrow test reveals arsenic poisoning, investigators try to determine if it is due to groundwater contamination or something more sinister.

A missing bank president's body is found floating in a lake; the duct tape used in binding him to a chair helps solve the crime.

A husband was shot and killed, forensic psychiatry helped the wife to remember the details for what happened.

The body of a 16-year-old girl is discovered nine months after her disappearance; forensic scientists find clues that paint a virtual portrait of her killer.

A young woman falls to her death in what appears to be a tragic accident; a forensic exam of photos taken at the scene tells a different story.

Haunted by her mother's long-ago disappearance, a woman undertakes an investigation of her own and stumbles upon a dark family secret.

The robbery and brutal murder of an elderly couple goes unsolved for 10 years; a forensic scientist makes history when he solves the crime.

A man is charged with the murder of a wrestling champion; six years later, a forensic animator testifies on his behalf.

A 19-year-old girl is found dead in her car in what appears to be a suicide; police discover that the victime was involved in a love quadrangle, giving several people motive to kill.

Fifteen years after a man disappears, using a metal detector, police find evidence which proves what had happened.

The body of a young California co-ed under an isolated interstate ramp sets off an investigation; San Diego police have no idea who would want her dead, but they discover a tiny, unique fiber on the victim's clothing.

Police become suspicious of a man who reported his wife missing 15 years after doing the same thing with his first wife.

While investigating the case of a Colorado hunter shot three times and killed, police suspect two murder weapons, and two killers, but forensic evidence points them closer to home.

A serial arsonist burns thousands of California homes and businesses.

When a woman's bone marrow test reveals arsenic poisoning, investigators try to determine if it is due to groundwater contamination or something more sinister.

A missing bank president's body is found floating in a lake; the duct tape used in binding him to a chair helps solve the crime.

A husband was shot and killed, forensic psychiatry helped the wife to remember the details for what happened.

The body of a 16-year-old girl is discovered nine months after her disappearance; forensic scientists find clues that paint a virtual portrait of her killer.

A young woman falls to her death in what appears to be a tragic accident; a forensic exam of photos taken at the scene tells a different story.

Haunted by her mother's long-ago disappearance, a woman undertakes an investigation of her own and stumbles upon a dark family secret.

The robbery and brutal murder of an elderly couple goes unsolved for 10 years; a forensic scientist makes history when he solves the crime.

A man is charged with the murder of a wrestling champion; six years later, a forensic animator testifies on his behalf.

A 19-year-old girl is found dead in her car in what appears to be a suicide; police discover that the victime was involved in a love quadrangle, giving several people motive to kill.

Fifteen years after a man disappears, using a metal detector, police find evidence which proves what had happened.

The body of a young California co-ed under an isolated interstate ramp sets off an investigation; San Diego police have no idea who would want her dead, but they discover a tiny, unique fiber on the victim's clothing.

Police become suspicious of a man who reported his wife missing 15 years after doing the same thing with his first wife.

While investigating the case of a Colorado hunter shot three times and killed, police suspect two murder weapons, and two killers, but forensic evidence points them closer to home.

A serial arsonist burns thousands of California homes and businesses.

A young single mother is abducted from a gas station and is later found stabbed to death near an oil field; the detectives use shoe and tire impressions to weed out numerous suspects.

When a 23-year-old Marine dies in his bedroom, doctors initially believe a heart attack is to blame; when arsenic is found in his organs, his wife is charged with murder; a sharp attorney and toxicological testing uncover the truth.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

41-year-old Adrienne Shelly was a filmmaker and mother who had just finished her film "Waitress" when she was found hanging from a shower curtain rod; initially, authorities believe her death to be a suicide, but soon learn nothing is what it seems.

In the late hours of night, a man lies fast asleep in his bed while a woman looms over his prone body with a kitchen knife and slices off his manhood; this marks the end of the broken marriage between Lorena and John Bobbitt.

Experts shed light on the shocking motive that prompted the Menendez brothers to murder their own parents, Jose and Kitty Menendez.

In a sensational, televised trial, Erik and Lyle Menendez were found guilty of murdering their parents; a shocking motive was behind the brothers' actions.

A small community in upstate New York is devastated when a car accident claims the life of a well-respected nurse.

A woman disappears without a trace, and police learn two other women vanished under similar circumstances.

Hikers near Anchorage, Alaska discover a body wrapped in sheets edged in orange stitching; they discover threads of evidence clinging to the sheet.

The son of a murder victim contacts the police when a flight attendant is brutally murdered in a remarkably similar way.

A two-man shrimp boat sinks when a fast-moving, violent storm struck the Louisiana coast; a deckhand is considered a hero for trying to save the drowned captain, until his body is found.

A real estate tycoon must have had a premonition about foul play, as he wrote it in his will.

The cold-blooded murder of an American tourist in a Mexican resort causes law enforcement to focus on both sides of the border.

When a prominent banker's wife is kidnapped, the trail leads police on a wild goose chase; they track down disgruntled bank customers and examine computer fonts.

A man has no recollection of events after stabbing his wife and holding her head underwater in a swimming pool.

A fire investigator determines if a kerosene heater is the cause of a fire that killed one person or if it was murder.

California police in 1957 search for a murderer, but the case goes cold; 50 years after a crime is committed, advances in computer technology determine the killer.

Investigators piece together tiny clues at the scene of a hit-and-run accident; their findings help to track down the offending driver.

Investigators determine what caused a house fire that killed an elderly couple and whether the victims' son is responsible.

Detectives are suspicious after a woman is killed in a hunting accident, but it takes more than twenty years before a trace evidence analyst is able to match fibers on a soiled blanket to the killer.

When hunters find a skull in a Texas canyon, police find bits of clothing, a woman's shoe, some small bones and a strand of hair; once they discover her identity, it was time to find the killer.

A wife is missing in Key West; investigators wonder if they should be searching for a missing person or a killer.

Suicide notes and a pistol in hand lead police to suspect that a mother of two young children appeared to had killed herself, but when investigators learned of a house fire she was in three years earlier, they reinvestigate.

The violent death of an Air Force officer's wife outside a Philippines air base is examined, amid accusations of a love triangle involving the murdered woman's husband; investigators use groundbreaking computer forensics to make their case.

A two-man shrimp boat sinks when a fast-moving, violent storm struck the Louisiana coast; a deckhand is considered a hero for trying to save the drowned captain, until his body is found.

A real estate tycoon must have had a premonition about foul play, as he wrote it in his will.

The cold-blooded murder of an American tourist in a Mexican resort causes law enforcement to focus on both sides of the border.

When a prominent banker's wife is kidnapped, the trail leads police on a wild goose chase; they track down disgruntled bank customers and examine computer fonts.

A man has no recollection of events after stabbing his wife and holding her head underwater in a swimming pool.

A fire investigator determines if a kerosene heater is the cause of a fire that killed one person or if it was murder.

California police in 1957 search for a murderer, but the case goes cold; 50 years after a crime is committed, advances in computer technology determine the killer.

Investigators piece together tiny clues at the scene of a hit-and-run accident; their findings help to track down the offending driver.

Investigators determine what caused a house fire that killed an elderly couple and whether the victims' son is responsible.

Detectives are suspicious after a woman is killed in a hunting accident, but it takes more than twenty years before a trace evidence analyst is able to match fibers on a soiled blanket to the killer.

When hunters find a skull in a Texas canyon, police find bits of clothing, a woman's shoe, some small bones and a strand of hair; once they discover her identity, it was time to find the killer.

A wife is missing in Key West; investigators wonder if they should be searching for a missing person or a killer.

Suicide notes and a pistol in hand lead police to suspect that a mother of two young children appeared to had killed herself, but when investigators learned of a house fire she was in three years earlier, they reinvestigate.

The violent death of an Air Force officer's wife outside a Philippines air base is examined, amid accusations of a love triangle involving the murdered woman's husband; investigators use groundbreaking computer forensics to make their case.

When an 18-year-old girl is abducted while talking on a pay phone, forensic evidence found on her clothing points police in the direction of a suspect who shockingly confesses that he didn't act alone.

In the story of a Los Angeles kidnapping, ransom and murder ring, retired scientists use sonar equipment to locate victims at the bottom of a reservoir.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Patients at the VA Hospital in Clarksburg, W.Va., keep dying after experiencing shockingly low blood sugar levels; an investigation into their deaths reveals an overnight nurse was injecting patients with lethal doses of insulin.

A 70-year-old retired veteran is found dead on his boat after a bad sea storm; detectives discover he was killed during an attempted robbery after winning $400 in keno.

A Texas love triangle turns deadly, and it appears to be an open-and-shut case until technology tells the tale.

After the discovery of the brutal murder of an 18-year-old desk clerk of a beachfront condo, analysts use brand-new mitochondrial DNA technology to prove the killer's identity.

A 33-year-old West Virginia husband and father seemingly dies in an accidental house fire; a closer look at the scene reveals a more sinister case.

July Fourth weekend leads to tragedy for a California family; to catch a killer, detectives utilize an unorthodox technique - analyzing bug fragments - to help put a murderer behind bars.

A family mourns the unexpected death of a beloved grandmother at Christmas, and while local police assure everyone that she was the victim of a tragic accident and that there is no foul play, some things about the scene don't add up.

When a true crime hobbyist connects a Utah Jane Doe to an Ohio missing persons case, detectives are hard-pressed to solve the decades-old murder.

Pieces of plastic the size of sand hold clues to a bombing.

At first glance it appears a young woman suffocated, but further investigation shows the scene was staged.

A killer is careless when a home is destroyed by fire and a young boy is missing.

A patrol officer is shocked by the amount of blood at a traffic accident and is shocked by the coroner's ruling until an anonymous phone call re-ignites the case.

An irrigation canal murder remains unsolved until a similar murder occurs.

The light of day and DNA picture painted by molecular biologist reveals new clues about a nighttime traffic accident.

On Valentine's Day, an obstetrician finds his wife dead and calls 911; police discover inconsistencies between the blood spatter evidence and his version of events.

Weed analysis and photogrammetry are used to help solve the 1995 murder of a California teenager is found dead after disappearing from her home.

When police recover the submerged car of missing man, they find no body; the investigation that follows uncovers a deadly obsession and the motive for murder.

Emergency dispatch recieved a call from a man who said his girlfriend shot and killed herself. But the wound was not self-inflicted.

Investigators piece together evidence found at the scene of a Native American woman's murder; the tyre tracks and shoe impressions could lead them to the killer.

Experts seek answers to a young businesswoman's death just before she was to testify in a criminal trial.

An anonymous caller reports the rape and murder of a dry cleaner employee; two eyewitnesses tell two similar but not identical stories.

Police blame a botched robbery when an eccentric elderly millionaire is found dead, but the motive could be wrong.

Woman disappears from grocery store parking lot in Boulder, Colo.; investigators find extraordinary clues in a pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles.

A car carrying three men pulls up alongside another on an Alaskan highway and fires shots, leaving a passenger dead; one of the passengers in the killer's car agrees to testify against his friends; the resulting trials don't end the carnage.

Police suspect a gay college student's slaying is a hate crime until forensic evidence points the case in another direction.

In a wealthy area of Philadelphia, police are called to the scene of what seems like a regular accidental drowning; the investigation begins to focus on one person who has many reasons to want the victim dead.

An irrigation canal murder remains unsolved until a similar murder occurs.

The light of day and DNA picture painted by molecular biologist reveals new clues about a nighttime traffic accident.

On Valentine's Day, an obstetrician finds his wife dead and calls 911; police discover inconsistencies between the blood spatter evidence and his version of events.

Weed analysis and photogrammetry are used to help solve the 1995 murder of a California teenager is found dead after disappearing from her home.

When police recover the submerged car of missing man, they find no body; the investigation that follows uncovers a deadly obsession and the motive for murder.

Emergency dispatch recieved a call from a man who said his girlfriend shot and killed herself. But the wound was not self-inflicted.

Investigators piece together evidence found at the scene of a Native American woman's murder; the tyre tracks and shoe impressions could lead them to the killer.

Experts seek answers to a young businesswoman's death just before she was to testify in a criminal trial.

An anonymous caller reports the rape and murder of a dry cleaner employee; two eyewitnesses tell two similar but not identical stories.

Police blame a botched robbery when an eccentric elderly millionaire is found dead, but the motive could be wrong.

Woman disappears from grocery store parking lot in Boulder, Colo.; investigators find extraordinary clues in a pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles.

A car carrying three men pulls up alongside another on an Alaskan highway and fires shots, leaving a passenger dead; one of the passengers in the killer's car agrees to testify against his friends; the resulting trials don't end the carnage.

Police suspect a gay college student's slaying is a hate crime until forensic evidence points the case in another direction.

In a wealthy area of Philadelphia, police are called to the scene of what seems like a regular accidental drowning; the investigation begins to focus on one person who has many reasons to want the victim dead.

Stories from across the world and refreshing conversations with Audie Cornish.

Stories from across the world and refreshing conversations with Audie Cornish.

From 1987 to 1992, rapes, abductions and murders of young women occur north of the U.S.-Canadian border; a tip leads cops to an unlikely suspect: a blond, blue-eyed accountant who lives with his wife in a pink house in the suburbs.

From 1987 to 1992, rapes, abductions and murders of young women occur north of the U.S.-Canadian border; a tip leads cops to an unlikely suspect: a blond, blue-eyed accountant who lives with his wife in a pink house in the suburbs.

When college-aged women in Charlottesville, Va. go missing, the search for answers leads authorities to local star athlete Jesse Matthew Jr.; in a shocking story, two women are killed, but another survives to bring the murderer to justice.

When college-aged women in Charlottesville, Va. go missing, the search for answers leads authorities to local star athlete Jesse Matthew Jr.; in a shocking story, two women are killed, but another survives to bring the murderer to justice.

Sammy the Bull Gravano was the right-hand man to mafia kingpin, John Gotti and carried out multiple murders; after his arrest, he breaks the sacred oath of silence and cuts a deal with the government, testifying against his former boss.

Sammy the Bull Gravano was the right-hand man to mafia kingpin, John Gotti and carried out multiple murders; after his arrest, he breaks the sacred oath of silence and cuts a deal with the government, testifying against his former boss.

Two women are murdered in the same town and police fear a serial killer is on the loose, further investigation finds that they were both close to the same man.

A young woman is found dead on a golf course in the Bahamas; the grass on that course is so distinctive that it had evidentiary value; the evidence leds police to two suspects; each blamed the other, and they have to find out who the killer is.

A teenager goes missing after an evening of horseback riding; her body is found a month later, three miles from her home; the killer unknowingly leaves a trace of evidence behind, tiny but unmistakable clues that pointed to him and him alone.

When a popular disc jockey is found murdered in a community garden, police swing into action; a sniffer dog and a blood spatter expert led police to the killer and he'd been much closer than they realize.

Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he uses poison which had no taste or odour, fortunately for investigators, it also has a unique chemical signature.

A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

A serial arsonist was on the loose in Washington, DC. Each of the fires was started with the same type of incendiary device. The perpetrator was very careful, and seemed to leave no evidence behind... but there were clues in the ashes and it was up to forensic scientists to find them.

A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.

Investigators on both sides of the Atlantic seek links between three homicides that look like professional executions.

Who put a bomb in the home of a 29-year-old woman and killed her?

A killer tried to destroy everything which could link them to the crime; but in doing so, they inadvertently created new forensic evidence, evidence which came to light using a technique never before used in a criminal investigation.

After a tycoon's wife is found dead in her SUV submerged in a half-frozen creek, police begin to suspect it wasn't an accident.

A Russian immigrant is found dead and a strange phone call to his office is the only lead investigators have.

Physical evidence intially condemns a prime suspect to a double homicide, but DNA from a discarded spoon points to another.

A young girl falls ill and dies; forensic investigators search for evidence halfway around the world to shed light on the tragic death.

Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he uses poison which had no taste or odour, fortunately for investigators, it also has a unique chemical signature.

A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

A serial arsonist was on the loose in Washington, DC. Each of the fires was started with the same type of incendiary device. The perpetrator was very careful, and seemed to leave no evidence behind... but there were clues in the ashes and it was up to forensic scientists to find them.

A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.

Investigators on both sides of the Atlantic seek links between three homicides that look like professional executions.

Who put a bomb in the home of a 29-year-old woman and killed her?

A killer tried to destroy everything which could link them to the crime; but in doing so, they inadvertently created new forensic evidence, evidence which came to light using a technique never before used in a criminal investigation.

After a tycoon's wife is found dead in her SUV submerged in a half-frozen creek, police begin to suspect it wasn't an accident.

A Russian immigrant is found dead and a strange phone call to his office is the only lead investigators have.

Physical evidence intially condemns a prime suspect to a double homicide, but DNA from a discarded spoon points to another.

A young girl falls ill and dies; forensic investigators search for evidence halfway around the world to shed light on the tragic death.

Stories from across the world and refreshing conversations with Audie Cornish.

Stories from across the world and refreshing conversations with Audie Cornish.

Melanie Zanona; Catherine Lucey; Isaac Arnsdorf.

Mike Williams mysteriously disappears on his wedding anniversary, and it looks like he may have been eaten by alligators, but looks can be deceiving; a break in the case reveals secrets.

Colorado soccer mom Paige Birgfeld vanishes and a small town is left on edge; cops dig for clues and make a shocking discovery that this devoted mom is living a secret double life.

Churchgoers know something is up when pastor Matthew Winkler doesn't show up for services: he's found dead on his bedroom floor and twisted sex fantasies and dark family secrets start to surface.

A successful lawyer, Mormon family man, and father of five is shot down in cold blood at a Walgreens parking lot, but a closer look reveals a dirty office affair that turned into a dangerous game of Russian roulette.

Tattoo shop owner Dennis Abrahamsen is found brutally murdered and naked on a massage table in his home; evidence tells a story of a wild sex party gone wrong with a famous adult actress.

Two bodies are discovered, shot to death in their car; the car windows are broken, but there's no sign of shattered glass.

Key suspect has a solid alibi in the murder of a war veteran; but police get a lead by finding a new suspect with a sweet tooth.

A woman who appeared to have taken her own life told her sister that, if anything were to happen to her, there was a note in the china cabinet.

When an aspiring model turns up dead, police suspect her boyfriend. But must dig deeper for clues when he is cleared.

Tiny fibers and an asthma inhaler are the clues that lead officers to the killer of an off-duty policeman.

Investigators search the world of high rollers and offshore betting to solve the first triple homicide in Verona, Wisc.

Police search every apartment building in town when the body of a young girl found on an isolated farm holds a set of keys but no ID.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question, and authorities track down the car to find critical evidence.

Three years later, a second autopsy determines who's right when a medical examiner and detectives disagree on the cause of death.

Hit-and-run boating accident that kills a popular young man causes investigators to search for one boat out of thousands.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man is killed in a mysterious car crash, but the evidence at the scene lead investigators to believe it is not an accident; forensic science reveals what really happens, and the truth devastates three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

Wealthy man is shot dead while his wife is forced to open their hidden safe, but they couldn't be identified because they were wearing ski masks.

The bomb was constructed to cause as much damage as possible and it did, killing the victim with deadly force and flame; a painstaking search yielded tiny clues, which identified the killer as surely as if he'd signed them.

A twelve-year-old girl claims that she was abducted and sexually assaulted; her story seems unbelievable until police discover fibers on her clothing.

A man calls for help when his wife has a fatal fall down the stairs; numerous amount of bloodstains make police suspicious.

Tiny fibers and an asthma inhaler are the clues that lead officers to the killer of an off-duty policeman.

Investigators search the world of high rollers and offshore betting to solve the first triple homicide in Verona, Wisc.

Police search every apartment building in town when the body of a young girl found on an isolated farm holds a set of keys but no ID.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question, and authorities track down the car to find critical evidence.

Three years later, a second autopsy determines who's right when a medical examiner and detectives disagree on the cause of death.

Hit-and-run boating accident that kills a popular young man causes investigators to search for one boat out of thousands.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man is killed in a mysterious car crash, but the evidence at the scene lead investigators to believe it is not an accident; forensic science reveals what really happens, and the truth devastates three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

Wealthy man is shot dead while his wife is forced to open their hidden safe, but they couldn't be identified because they were wearing ski masks.

The bomb was constructed to cause as much damage as possible and it did, killing the victim with deadly force and flame; a painstaking search yielded tiny clues, which identified the killer as surely as if he'd signed them.

A twelve-year-old girl claims that she was abducted and sexually assaulted; her story seems unbelievable until police discover fibers on her clothing.

A man calls for help when his wife has a fatal fall down the stairs; numerous amount of bloodstains make police suspicious.

A tiny clue inside a suspect's watchband and a popular television show help solve the case of a woman's disappearance.

One year after Maine resident Pearl A. Bruns' disappearance, forensic technology helps to find her body and determine who was responsible for her death.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The investigation into the disappearance of flight attendant Helle Crafts leads to the murder conviction of her pilot husband.

Scientists and detectives use DNA to solve a string of rapes and murders.

Police use DNA profiles of seed pods from a truck to catch a killer.

Police believe they have a serial rapist and murderer, but DNA testing and research leads to another arrest and conviction.

In 1976, 182 war veterans in Philadelphia become hospitalized with pneumonia-like symptoms and 29 die; the disease resurfaces every few years.

After a wealthy Southern physician gets murdered with a baseball bat, his wife and a handyman become convicted of the crime.

In 1971, John List disappears after murdering his mother, wife and three children; he eludes the law for years until an age-scaled sculpture of the suspect and a true-crime TV program helps lead to his arrest in 1989.

An 11-year-old boy comes down with a fever and diarrhea after eating an undercooked burger; when his condition worsens, his mother drives him to a hospital and doctors discover E. coli destroying his body.

Florida police search for a serial rapist and murderer who left small red fibers on each of his 10 victims.

When an English couple go missing, police suspect their son killed them and must rely on mud and blood samples found in the couple's two cars to find their bodies.

Experts attempt to discover the source of heavy fog on Highway I-75 in Tennessee, which caused a 99-car accident and 12 deaths.

When a woman goes missing from her home, police focus on her husband when an airline luggage tag and luminol point to an affair and murder; footage from a TV crew and Coast Guard photographs lead investigators to the suspect's missing boat.

Computers aid the police and FBI in solving a string of crimes.

Using an anonymous letter and geographical profiling, investigators close in on a serial rapist, and a cleverly obtained DNA sample confirms their suspicions.

When a young boy has serious respiratory problems and his father shows signs of early Alzheimer's disease, a chance encounter with a stranger kicks off an investigation into the cause.

Police in St. Petersburg, Fla., use cell phone mapping, wiretapping and a host of forensic evidence to find a surgeon's killer.

A woman wins her release after being imprisoned for allegedly killing her mother in a car fire.

Authorities are able to apprehend a kidnapper because he allowed his victim to write a will on a telltale pad of paper.

Experts debate whether an apparent heart attack victim died from natural causes or alleged poisoning by his girlfriend.

When a 12-year-old was found dead in her home, police were left clueless until a string of burglaries months later. A trail of stolen goods may help solve a murder.

When 15 year-old Marlene Miller was murdered, it would take 24 years and several retrials before forensic scientists discovered the evidence to bring her killer to justice.

Detectives use a forged signature to find a woman's abductor.

A woman is killed two days before she was scheduled to testify against a man accused of assaulting her and the prime suspect has an alibi.

A bite mark is all the evidence needed to convict a suspect who was robbing tourists in Florida.

Technology able to analyze human bite-marks yields information on a woman's death.

A death in Pennsylvania is strikingly similar to one in North Carolina.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man is killed in a mysterious car crash, but the evidence at the scene lead investigators to believe it is not an accident; forensic science reveals what really happens, and the truth devastates three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

Wealthy man is shot dead while his wife is forced to open their hidden safe, but they couldn't be identified because they were wearing ski masks.

The bomb was constructed to cause as much damage as possible and it did, killing the victim with deadly force and flame; a painstaking search yielded tiny clues, which identified the killer as surely as if he'd signed them.

A twelve-year-old girl claims that she was abducted and sexually assaulted; her story seems unbelievable until police discover fibers on her clothing.

A man calls for help when his wife has a fatal fall down the stairs; numerous amount of bloodstains make police suspicious.

A decade old case reopens, and a few seconds of a 911 call enable investigators to determine who is responsible for a murder.

A flawed envelope is an unlikely clue to identifying a killer who laced a water cooler with cyanide and caused the death of a woman.

A mussel diver and his fiancée are found dead in their burnt home; a tiny clue points to arson and murder.

For ten years, the disappearance of a college co-ed remained a mystery; new scientific testing cast a different light on a man who had been a suspect all along.

Tipster is found dead after revealing that a woman's death 16 years ago was murder.

The murder of 53-year-old Paul Gruber is examined and the evidence points to Darryl Robin Kuehl, who was later convicted of the crime.

When 4-year-old April Renee Tucker is found dead in her backyard, her parents tell the police that neighborhood dogs attacked and killed her, but the injuries on her body don't match their account of what happened.

San Diego police investigate the murder of a missing person whose hands turn up in a dumpster; an anonymous letter, containing details only the killer would know, offers clues to solving the case.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

When a woman exhibits strange flu-like symptoms before dying, investigators discover someone added thallium to her soda; detectives initially suspect her husband, but the case takes a sinister turn.

Handwriting and simple doodles complicate a car-bomb case and an alleged self-defense shooting in a peaceful British farming village as police uncover a husband's plot to kill his wife for insurance money.

When dozens of infants develop serious breathing problems in the Cleveland area, doctors and investigators search high and low for the cause.

A well-liked bank vice president collapses and dies after taking pain pills laced with cyanide; the search for a motive reveals a callous suspect who had murdered once before.

Evidence reveals a teacher who complained of being stalked and harassed by another teacher was scamming police.

A man kills two people with bombs in an effort to get investors off his back, but authorities catch onto him and he becomes sentenced to life with no chance of parole.

A man arrested for the sexual assault and attempted murder of a boy in a European country becomes linked to a murder in Zurich, Switzerland, through analysis of microorganisms.

Heavy rains and snow run-off carry manure into Milwaukee's water supply in 1993, leading to an epidemic of gastrointestinal illness affecting 400,000 people.

Autopsies reveal that a string of unexplained deaths in Omaha resulted from poison-induced liver disintegration.

In a series of murders near Sacramento, Calif., a killer gags and molests prostitutes, cuts their clothes in random patterns and cuts off their hair; microscopic evidence helps solve the case.

After the discovery of a skull in the forest near a boy scout camp, police use facial reconstruction to identify the body.

Investigators use obscure evidence to find the person responsible for killing justice officials with mail bombs in the South.

When a nurse starts experiencing a variety of flu-like symptoms, she discovers that she is HIV-positive; she learns that her infection was not accidental.

time of death becomes pivotal when a pregnant woman is found murdered in her air-conditioned bedroom.

An obscure print found at a crime scene.

A diner in a small town, an endocrinologist and a forensic botanist help destroy a prime suspect's alibi.

Neighbors do not hear the gunshots when a union official is killed in his home.

A man tells police he shot an intruder who murdered his wife; forensic evidence leads police to re-examine the man's motives.

A police officer claims his estranged wife's shooting death was a suicide, but investigators think it was a murder.

When fire fighters find a family dead inside their home, it appears to be a murder-suicide; clues at the scene lead investigators to believe otherwise.

A couple's murder leads investigators into the world of white supremacists and a string of hate crimes.

A rare gun and a victim's beloved dog help investigators trying to solve a multi-year long murder case where most of the witnesses were admitted drug users.

A search in Virginia's DNA databank reveals the identity of a news producer's murderer.

A homicide detective claims his wife accidentally shot herself in the head, but the evidence indicates otherwise.

Officials probe the death of a woman investigating the possible side effects of the drug she was prescribed for bipolar disorder.

A chip of stainless steel brings a killer to justice 20 years after a woman's body is found in a ravine.

A man states that a robber shot and killed his wife while they were on the beach, but a song he downloaded makes investigators suspicious.

Detectives discover new clues left by a stalker's letter to his victim.

A killer is careless when using a murder weapon that is unique and easily traceable.

When a high school athlete is killed in a hit and run accident, investigators hoped tiny paint chips and shards of plastic would lead them to the driver.

A woman is abducted and a month later found dead, then a tip leads investigators in the right direction.

How the bombs were made leads investigators in Colorado to find the perpetrator.

DNA profiling reveals clues leading to a killer's identity 20 years later.

A device intended to save lives proves to be the only witness to a mans death.

When a man dies after falling down the stairs, a witness says one thing and the evidence says another.

A wax bullet, white blanket and olive colored carpeting, tell a lot about the murder of a young woman found in a ravine.

When a house burns to the ground and a woman's charred remains are found, investigators must determine whether it was an accident or arson.

An ammunition box and fluorescent fibers reveal the betrayal that led to the murder of a millionaire's family.

The 1960 kidnapping and murder of brewery heir Adolph Coors III leads to one of the most intense manhunts in U.S. history.

A used tissue, 12 years after the murder of a young Missouri woman, may be what cracks the case with a suspect list a mile long.

One year after her father's death, a teen's role in a high school production of "Hamlet" causes her to reveal the chilling truth behind her family's tragedy.

A mother puts her hope in the internet and an independent investigation to clear her name after authorities charge her with murdering her 17-month-old son in a fire considered to be intentionally set.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Forensic scientists provide authorities with evidence that a death deemed accidental 20 years ago was actually murder.

Detectives learn that a genetic disorder caused the deaths of a woman's children, resulting in an overturned conviction.

When a young woman goes missing on the way to the train station, investigators use a strand of hair and a bloody pillowcase to find a suspect.

Investigators reopen a case from 1984 involving the rape of a young Virginia woman when DNA testing refutes her identification of the rapist and calls everything into question, leading to the accused person's exoneration.

A speck of bicycle paint and a speck of nickel left over from a collision with a twice-convicted child molester's car provide critical clues in the murder of a 9-year-old.

A 2-year-old boy's brain seizures and breathing problems baffle doctors until they learn the mother exhibits signs of Munchausen syndrome by proxy, a rare condition that led her to physically abuse her son and contributed to her daughter's death.

Two years after an 18-year-old's murder in Albion, Mich., a tiny drop of blood and burned bones lead police to her killers.

A mother claims that an intruder murdered her two sons, but lacking a motive, police use blood-spatter analysis and behavioral profiling to reconstruct a different scenario.

A routine missing persons report leads Texas police to discover a deadly love triangle; evidence found in a suspect's home matches the murder scene and leads to the indictment of the victim's girlfriend and her lover.

A 1995 fire razes the mansion of a Kansas doctor, killing two of her three children; disturbing accounts from an ex-husband lead investigators to believe the doctor set the blaze herself.

A husband confesses to his wife's murder, only to be found not guilty a year later when a phone tip and forensic evidence point to another.

In Lorton, Va., police attempt to determine who abducted 5-year-old Melissa Brannen after she disappears from a Christmas party, but cannot be certain until they match hair from a rabbit-fur jacket Brannen wore that day.

An 11-year-old girl is sexually assaulted and shot twice at close range.

A woman is killed weeks before testifying against the man who sexually assaulted her.

New York police hunt the Zodiac killer after a series of deadly attacks.

When a healthy young man dies mysteriously in his sleep, toxicology tests reveal that it may have been foul play. Could a `suicide note' hold the key to solving the case.

A child's memory, a diary and a forensic psychologist help investigators solve a young woman's murder.

Investigators weigh several theories while probing the death of a retired police officer, including a botched robbery and suicide.