A local Washington man's life is at stake when detectives are alerted to a murder for hire plot against him; they set up a sting operation to catch the ruthless mastermind before it's too late.

After a member of the Indiana cycling community is found mysteriously murdered, medical examiners discover the victim ingested potentially lethal amounts of poisonous mushrooms; Police must work to uncover the culprit behind this bizarre crime.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

A newly single mother of two vanishes after going on a date with an old high school friend she connected with on Facebook; investigators race against the clock to reveal the true identity of the mystery man.

A nurse is gunned down in her home and detectives believe they have a clear suspect; as they delve deeper into the investigation new information leads them down a completely different path.

A man calls 911 to report that his pregnant wife has died by suicide; the case is closed until a suspicious house fire 24 years later leads police to question what really happened that day.

When police are unable to identify a young murder victim, a dogged investigator employs the help of armchair detectives and new DNA technology to find her killer -- and her identity.

A young woman who is lying on railroad tracks is hit by a freight train, but when her cause of death comes into question, investigators push to reopen the case; after years of dedicated police work, the buried truth finally comes to light.

A police officer reports that he found his wife dead in their home, but when the scene says suicide and the family says otherwise, the investigation spills across state lines to reveal the truth.

A local celebrity is fatally shot in his bedroom, and while debt and depression point to suicide, forensic evidence and expert testimony hint at something more sinister.

A 2004 welfare check spirals into a sinister tableau of death when Idaho Sheriffs make forceful entry into a home only to discover a horrific crime scene provoked by a cult-like prophecy, revealing a shocking truth that no one saw coming.

An idyllic North Carolina town makes the international press when a double murder involves a victim with an infamous past.

When a young Texas mother goes missing, a tangle of dark secrets and a trail of deceit threatens to derail the investigation.

When a 21-year-old goes missing during the height of the pandemic, LAPD detectives unravel a mystery hidden in deleted security video to solve a murder.

When a beloved Michigan mom disappears, investigators discover she was the target of a dark satanic ritual.

When an ROTC student vanishes, a determined female detective must confront the prejudices of the time and crack the campus code of silence to bring a killer to justice.

When a successful Phoenix realtor disappears in the desert, investigators discover that a killer is targeting real estate agents and must catch him before he strikes again.

When a twenty-year-old artist is discovered dead in a suitcase across state lines, detectives must uncover the dark truth behind an obsessive lover's deadly actions.

When a human skeleton is found on marshland and determined to be at least 18 months old, a computer consultant gives her a face and name.

A killer places all the incriminating evidence to the murder in a plastic bag, hoping it will float down the river.

A woman's body is found inside a burned mobile home and the autopsy reveals she was beaten, making this a murder.

Security guard who disappeared from his post was found a year later in a remote camp site; a decade later, a phone call and a paint smear on his boot helped scientists determine what happened during his final moments.

When three students are brutally murdered close to campus, investigators must determine what the women had in common before their serial killer strikes again.

A Naval officer who threatened to go public with tales of on-the-job sexual harassment and assault is brutally murdered, but when investigators find the allegations could be part of an elaborate scheme for money, they turn to forensic science.

A man is found stabbed to death after a night in a strip club; a drop of blood on a bedspread becomes critical evidence five years later.

After police identify a murder victim thanks to her butterfly necklace, they discover several co-workers had vendettas against the victim.

The brutal murder of a construction site foreman looks like the work of a disgruntled employee, but forensic science points to an unlikely suspect.

A shooting victim mutters the name of her apparent assailant before dying, but fingerprint comparisons, handwriting analysis, ballistics and DNA testing show someone else close to home is the true killer.

A woman's story seemed far fetched; she tells investigators that a man broke into her home wearing only underwear and gloves, killed her boyfriend and raped and terrorized her.

A family vacation turns into a terrifying search for a missing wife and baby, then becomes a manhunt for a killer who committed a horrific crime.

A DNA dragnet catches a killer eight years after the kidnapping, rape and murder of a college coed in Oklahoma.

A nosy neighbor with a disturbing obsession becomes a suspect in a woman's murder at an upscale apartment complex; police discover an incredible link to an unrelated murder thousands of miles away.

When a Navy officer succumbs to a mysterious illness after months at sea, nothing makes sense, until an autopsy yields a stunning revelation; all roads lead to dead ends, until they zero in on an unlikely target.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

When a young woman is found dead in a field on the outskirts of Green Bay, Wis., a fitness tracker helps detectives solve the mystery.

When a young woman is found dead in a field on the outskirts of Green Bay, Wis., a fitness tracker helps detectives solve the mystery.

A college student goes missing in broad daylight from her off-campus job at a softball field; investigators receive a mysterious phone call that changes everything.

After their brother is convicted of murder, three siblings hatch a deadly plot to avenge him by targeting the star witness in his trial; the plan goes awry when the wrong person is on the receiving end of their vengeance.

Twin sisters, raised with a deep disdain for law enforcement, are arrested for shooting a neighbor's dog, then escape custody and go on the run, leading to one of the deadliest shootouts in Colorado history.

Raised in a strict home, Matthew and Tyler believe it's their duty to cleanse the world of those living in sin; when two men are found dead, the brother's connection to them points toward a hateful trail of crime.

Sheltered teenage brothers Robert and Michael Bever idolize serial killers and dream of being the most prolific murderers in history; with an arsenal of weapons, their quest for notoriety begins at home in their quiet Oklahoma suburb.

The Carr brothers arrive in Wichita, Kan., intending to commit robberies, but their plans quickly escalate to a murderous spree the likes of which Kansas had never seen; their reign of terror becomes known as the "Wichita Massacre."

A beloved chef and cooking instructor is found shot to death at work, and investigators are left baffled; but when a loved one's strange behavior draws their attention, detectives discover the killer has been right in front of their eyes.

An ailing man isn't seen for weeks, and his family and friends grow concerned; when his wife is confronted about her changing stories, her revelation shocks the community, and everyone who knows and loves her as a dedicated grandmother.

A Florida woman is shot in her vacation rental, and the hunt for her killer connects back to a murdered Minnesota farmer; clues point to a doting grandmother living a double life, who then leads authorities on a multi-state chase.

A woman is murdered in a home invasion; her best friend and neighbor is shot the following night; investigators unearth disturbing secrets that suggest the cases may be linked.

When Cathy Torrez never comes home after work, her family fears the worst; an intensive search ends after her car is found, with her body in the trunk; it take years to get to the truth.

When a Colorado mother vanishes, the detective investigating her disappearance discovers a connection to a previous assault; the survivor of that attack recounts her terrifying ordeal.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

In Wisconsin, Steven Avery and his nephew, Brendan Dassey, are convicted of killing Teresa Halbach in a case that defies easy answers.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

Just before Christmas, the body of a young mother is found strangled inside a burning car in a quiet Minneapolis suburb and detectives suspect that she was killed by someone very close to her.

Just after Christmas, a young couple is found murdered inside their Florida home; neighbors can't imagine the couple had been in the area long enough to make a mortal enemy; police uncover deeply personal details, and soon expose a deadly secret.

Years after a Montana man is found dead, his son dreads what he'll find when he opens up the box of case files, giving him insight into what really happened.

Years after a Montana man is found dead, his son dreads what he'll find when he opens up the box of case files, giving him insight into what really happened.

When a University of Utah athlete is found murdered on campus, investigators learn that she had reached out to the campus police for help multiple times before her death.

In an exclusive Houston neighborhood, an entire family is found dead of an apparent murder-suicide; Sgt. Johnny Bonds takes on the entire justice system to uncover the shocking truth and expose an underworld of murder for hire.

A grieving mother takes her own life, or so it seems; her parents start an investigation and secrets emerge about the Baptist minister and husband that leaves friends and family wondering if there's more to the story.

When two girls are heinously murdered, Houston acknowledges they have a gang problem; Kelly Siegler joins the prosecution of an unprecedented five death penalty trials in this shocking case that changed the rights for victims' families.

When a teenage track star sneaks out at night, she finds herself caught in a deadly love triangle; once her body is found in a field, the small town of Mansfield, Texas, becomes wrapped in a sensational tabloid tale of duty, honor and murder.

When Fort Lauderdale, Fla., police respond to reports of a deceased male who fell down the stairs, their investigation turns to a homicide case; with multiple witnesses and an attorney on scene, investigators must dig deep to get to the truth.

After returning from several tours of duty abroad, a soldier is found beaten to death on his own army base in Hinesville, Ga; Investigators soon discover the greatest danger may have been waiting for him closer to home.

A Florida woman's search for her missing husband takes a turn when his body is found in a landfill; as detectives dig into his home life, the victim's family becomes a crucial link to uncovering the truth.

A beloved psychologist is found murdered and left in the trunk of a car in the Nevada desert; as the strange case unfolds, police discover he may have been the victim of a model aiming to maintain her lavish lifestyle.

It is a case Josh Mankiewicz cannot forget because, while a student-athlete did everything right to keep herself safe, others did not; after she was found murdered, investigators learned she reached out for help multiple times before her death.

Andrea Canning reflects on a story that reminded her how people can be vulernable and how quickly life can change; she speaks with Judge Esther Salas about the knock at her door that robbed her of the most important thing in her life.

The case involved detective work so unique, it managed to stay with Dennis Murphy for years; days before Christmas, Michelle Martinko was visiting the mall when she was found stabbed to death; investigators found her killer almost 40 years later.

It's a mystery that defies easy answers, and "Dateline" has been following it for more than a decade; Steven Avery and his teenage nephew were convicted of killing Teresa Halbach; now, Andrea Canning shares her insight into the controversial case.

After an apparent brazen home invasion during the holiday season in a Connecticut community leaves Connie Dabate dead, investigators discover a silent witness that cracks the case wide open.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.

After a young woman's body is discovered at a trash facility, a detective promises justice and comes face-to-face with a serial killer; Keith Morrison revisits the case.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.

A beloved couple is found murdered inside their home on Christmas morning; a single palm print is left behind; investigators work tirelessly to match the print to a suspect, until a letter from prison takes the case on an unexpected course.

Dayton, Ohio, is terrorized over the Christmas holiday as a string of brutal shootings have the residents wondering if they could be next.

A woman is found murdered after her close friend hears her screaming on the phone; the mysterious death of her boyfriend's twin brother leads investigators to a suspect.

A woman is found murdered after her close friend hears her screaming on the phone; the mysterious death of her boyfriend's twin brother leads investigators to a suspect.

When a soldier vanishes from Fort Hood, her family do everything they can to bring attention to her disappearance; Secretary of the Army Ryan McCarthy speaks about the investigation and allegations of sexual assault in the military.

Popular TV anchor, Diane King, is a local celebrity, passionate advocate and a loving wife and mother; when she gets murdered in her driveway, however, the investigation reveals a twisted tale of sex, lies and stalking.

Family man and all-around nice guy, Trent Mallory is murdered in his sleep in rural upper Michigan; sorting through multiple suspects and motives, the police set a trap to catch his cold-hearted killer.

An expectant mother, Samantha Dean, is shot to death in an abandoned parking lot in Bastrop, Texas; as detectives dig deeper, they discover a diabolical plan, a shocking betrayal and a killer relationship.

When devoted young mother Sara Summer vanishes from a small Tennessee town, the investigation into her life exposes a world of romance, lies and a fatal betrayal at the hands of a man she trusted.

A Peruvian healthcare worker gets a second chance at love until he's found murdered in his apartment; investigators set out to discover whether his new bride is a grieving widow or a femme fatale.

A healthcare worker is viciously attacked in her home with only her daughter as a witness; police must follow the clues at the scene to discover the truth behind the attack.

Firefighters are called to the scene of an Iowa family's home to find the residence up in flames; as the smoke clears, they discover the charred remains of a man and question whether the fire and his death were truly accidental.

The fatal shooting of a well-known San Antonio rapper puts the community on high alert as police take part in a manhunt to track down the killer; as they piece together the evidence, witnesses point the finger at a scorned lover fueled by rage.

A woman pursuing her dreams is found drugged in her home; across New York, another person with similar symptoms comes forward, and authorities connect the cases, exposing an international fugitive with a ruthless pattern.

When an Arkansas family man is shot to death in his home, his widow is quick to point the blame around town; detectives tail the suspects, a torrid affair and deadly secret come to light, revealing a manipulative wolf in sheep's clothing.

A frantic Ohio woman seeks refuge in a fast-food restaurant after escaping from a deadly assault; police sort through contradicting stories to expose a habitual criminal.

When a devoted husband and father is found shot to death on his bathroom floor, the case is quickly ruled a homicide; a key witness starts changing their story, detectives must determine if this was an act of self-defense or premeditated murder.

A Wild West reenactor is found dead in his private Arizona ranch; police race to find the killer of the beloved showman; as investigators connect the dots, they realize the cold-blooded mastermind is lurking close to home.

When the spouse of a high-profile defense attorney is found dead in their Arkansas home, police theorize if a disgruntled client could be to blame; the investigation exposes an obsessive admirer with a delusional motive to murder.

After a routine welfare check, Albuquerque police discover a beloved teacher has vanished; as investigators dive into her family history, they uncover a shocking murder plot driven by vengeance and jealousy.

After an Oregon wife's failed suicide attempt results in her husband's death, the cracks in a seemingly perfect marriage are brought to light; the investigation uncovers if his inadvertent death is truly an accident or a deadly cover-up.

A Georgia woman who is brutally stabbed provides police with a suspect's name before succumbing to her injuries; as the manhunt for the killer begins, a pattern of toxicity exposes a violent past and more than one murder.

The tragic suicide of a grandfather seems to be an open-and-shut case until detectives in Morrisdale, Pa., receive a message from beyond the grave that suggests the deceased may not have died by his own hand.

Beloved Christmas tree farmers are executed in the front seat of their car and a manhunt for their killer is launched that keeps investigators on the case for over three decades before justice is served.

After responding to a robbery at a sporting goods store on Christmas Eve, an Irving, Texas police officer is gunned down in cold blood.

A man steals millions of dollars by conning numerous women and businesses over 25 years; one woman brings together a group of his victims to hold him accountable and make him face justice.

A man steals millions of dollars by conning numerous women and businesses over 25 years; one woman brings together a group of his victims to hold him accountable and make him face justice.

A 21-year-old college student is found murdered; the case remains cold for nearly 40 years until a new detective uses an innovative method to catch her killer.

The deadly 2020 shooting at U.S. District Court Judge Esther Salas' home, which killed her son and critically injured her husband.

Two sisters determined to fulfill a promise investigate the mystery surrounding their mother's death.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.

Dr. Carlisle's Mormon faith is tested when Arthur Gary Bishop asks for his help in understanding how he became a serial killer.

Dr. Al Carlisle's study of the violent mind continues when the men convicted of Utah's horrific Hi-Fi Shop mass murders enter the Utah State Prison, awaiting a death sentence.

Dr. Carlisle begins a surprising relationship with inmate Manny Cortez in the Oregon State Penitentiary and uncovers the impetus for Cortez's murder of two 11-year-old girls.

Dr. Carlisle's tapes documenting his 27-year relationship with Manny Cortez reveal the convicted murderer's point of no return when he became unhinged and began his violent spree.

Dr. Al Carlisle's descent into the violent mind begins by chance, when he's asked to run a psychological evaluation on a man who will go on to become one of America's most infamous serial killers: Theodore Robert Bundy.

Dr. Carlisle's evaluation of Ted Bundy is over, but his work on the notorious serial killer has just begun; as Dr. Carlisle develops his theory of the development of the violent mind, Bundy escapes from prison and goes on a murderous rampage.

Final Warning; Special episode of "Cold Justice" featuring insights from Kelly Siegler and behind-the-scenes facts.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific spree killers in history; the result is 500 hours of secret tapes and an obsession that blurs the line between reporter and subject.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific spree killers in history; the result is 500 hours of secret tapes and an obsession that blurs the line between reporter and subject.

After a series of women in the Seattle area are found brutally murdered with their bodies posed, police realize that they might have a killer stalking the area nightclub scene who is able to charm his victims into submission.

A woman claims to have been abducted from her multi-million-dollar home, leaving more than 150 investigators to search for her.

A woman claims to have been abducted from her multi-million-dollar home, leaving more than 150 investigators to search for her.

A foreign exchange student and soccer player's participation in a dangerous game leads to deadly consequences.

When detectives track down the killer of a Las Vegas cocktail waitress and mother, it becomes clear that the investigation has just begun.

A model with a checkered past goes under cover to reveal the truth about a cold case involving a romantic getaway on a boat that ended with a woman being lost at sea.

In an exclusive interview, Emma Coronel, wife of drug lord Joaquín "El Chapo" Guzmán, reveals the seduction and danger of life with a criminal mastermind, while confronting the ugliest truths of his actions and grappling with her own accountability.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific spree killers in history; the result is 500 hours of secret tapes and an obsession that blurs the line between reporter and subject.

A brutal fight leaves a woman fighting for her life and her freedom.

A millionaire lottery winner goes missing, leaving his financial advisor in the spotlight.

A deadly break-in pits mother against daughter.

The search for a missing man leads investigators to a surprising discovery.

In her first televised interview, Angelina O'Mara attempts to explain the back-to-back 2011 murders of her ex-husband and boyfriend; she describes her state of mind at the time and discusses whether she deserves redemption from those she hurt most.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

A bomb rocks South Chicago killing Mark Toney, investigators dig beneath the rubble to expose a violent, seductive con game and a shockingly deceitful relationship.

An Army vet is found dead on his farm; it first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling she said, she said murder mystery.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

A bomb rocks South Chicago killing Mark Toney, investigators dig beneath the rubble to expose a violent, seductive con game and a shockingly deceitful relationship.

An Army vet is found dead on his farm; it first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling she said, she said murder mystery.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

An early morning apartment fire in Fort Worth, Texas, sparks a murder investigation when a young woman's body is found beaten and bound inside; detectives quickly work to solve the case and uncover an elaborate plot fueled by revenge and greed.

After a mother and son are brutally attacked during a home invasion, Illinois police chase down several leads; they uncover a shocking motive with an occult leader and her loyal followers at the center of the crime.

The remains of 11 female bodies are found in the desert outside of Albuquerque, N.M.

The remains of 11 female bodies are found in the desert outside of Albuquerque, N.M.

As detectives struggle to find leads in the murder of a college student, the perpetrator strikes again.

An in-depth look into the disturbing murder of Travis Alexander.

An in-depth look into the disturbing murder of Travis Alexander.

Even as Jodi Arias continues to make headlines, a look back at the media circus surrounding her 2013 murder trial.

The murder of a church choir member reveals a sordid secret and an unlikely love triangle.

A man's roadside shooting leads to the discovery of his wife's double life.

Betrayal and finger pointing occur in the investigation of a murder in an isolated parking lot, which has multiple suspects.

A suspicious shooting reveals a real estate agent's scandalous secret life.

The brutal murder of a homecoming queen shocks a town.

A custody battle, a shooting and a suicide on the train tracks.

An Atlanta woman's secret addiction is revealed when her doting husband is gunned down.

Police are lead to a family conspiracy after a brutal slaying and a car fire.

An Ohio man is thought to have committed suicide but new leads could implicate his fiance.

A bizarre bombing, a body in a freezer and a jilted boyfriend lead police to a woman with a notorious past.

A woman blames mistaken identity on her boyfriend's death.

The mystery of a former Vegas showgirl, a dismembered body and a missing husband.

A college instructor calls 911; a murder scene or suicide.

A hunter's death has authorities tracking a killer.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

A suspicious fire and a secret lover lead officials to ask if the wife was involved.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific spree killers in history; the result is 500 hours of secret tapes and an obsession that blurs the line between reporter and subject.

Robert Davis, who was convicted of murdering a woman and her son, claims his confession was coerced and tries to prove he is innocent.

An investigation into the murder of a beloved couple in South Carolina reveals a feud and divides a family.

When a Chicago woman from a big family goes missing, investigators begin to suspect a man in her life is full of secrets.

When Israel Keyes is caught for the murder of 18-year-old Samantha Koenig, police have no clue what they've stumbled upon; after intense games of cat and mouse, the FBI uncovers one of the most calculated serial killers it has ever encountered.

A beautiful blonde seduces various lovers in a small town, causing havoc; it isn't until an unlikely witness steps forward and another tragic death occurs that the village becomes aware there is a cunning and charming killer in their midst.

When a Jeopardy-winning colleague romances Linda Kinkade, it seems she's won the jackpot until she dies mysteriously; it takes a wily cold-case cop to uncover an overlooked clue to put a killer behind bars.

Single mom Margie Danielsen falls in love with a handsome chef, but when an episode of "America's Most Wanted" airs, she realizes she may be far too close to a fugitive and must risk her life to bring him to justice.

When a dance instructor waltzes into widower Alan Helmick's life, he is elated until someone inspired by a movie puts an end to his dreams; It will take a savvy team of investigators to bring a killer to justice.

Kathi Spiars believes she's finally met Mr. Right when an ex-CIA agent gives her everything she's ever wanted; the honeymoon is over when she discovers a dark secret and then chooses to risk her life to bring an elusive killer to justice.

Policeman Glenn Turner is over the moon when a beautiful 911 dispatcher woos him with luxurious gifts, until he dies suddenly from natural causes; when a second man dies unexpectedly, his family searches for the truth to stop a cold-blooded killer.

Dewayne Barrentine thinks he has found the perfect mother for his young son, until he stumbles on a mysterious message from another mother looking for her own missing son.

When Girly Chew meets a charming doctor, she believes her American dream has come true; her co-workers become alarmed when she goes missing, and investigators are confronted with a bizarre case involving UFOs and alien queens.

A journalist embarks on a 40-year quest to uncover the motives of one of the most prolific spree killers in history; the result is 500 hours of secret tapes and an obsession that blurs the line between reporter and subject.

A college student turns up dead and her boyfriend becomes a prime suspect when blood splatters are discovered on his wall.

Texas police hunt frantically for a brutal rapist. No one knows where he'll strike next, but given the increasingly violent nature of his crimes, he must be found soon.

When detectives find a mismatched button in relation to a woman's death, they know they can follow the clue back to the killer.

A woman heads home after church, but never makes it there alive, triggering a homicide investigation.

Volunteers and police spend weeks searching for a missing girl. A psychic later leads them to a field where the body was found.

Forensic investigators try to stop a killer who is apparently responsible for two slayings in a community in South Carolina.

When DNA proves that a man who practically admits to a brutal attack is innocent, police wonder why he is willing to take the blame.

When a businessman is murdered, motives and suspects are plentiful. Was it simply a disgruntled employee or client? Or do some racy photos hold the clue to the crime?

A family break turns into a nightmare when the wife is found face-down in a lake; with no idea whether it was murder, an accident or suicide, police turn to a new forensic technique.

When friends see a woman in the back of a car flailing her arms and screaming, they assume she is having fun, but when they later come upon a jacket and a pool of blood, they realize they witnessed an abduction in progress.

An attack on a couple's home leaves the husband dead, the wife gravely injured and their son as a prime suspect; hundreds of miles away, a DNA sample may lead to the killer.

Detectives think they've solved a murder when they find the weapon and victim's blood in a man's flat, but the evidence may have been planted.

Detectives search for the bombers of two churches in Illinois, hoping that the materials used in the remnants of the handmade bombs will offer the clues to catch the culprits.

There was no apparent reason for the young, healthy college student to be dead; but when the medical examiner found the tiniest of clues during the autopsy, investigators were able to unravel the mystery of betrayal and revenge.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

Investigators search for a New Mexico mechanic who has been missing for eight years.

Investigators search for a New Mexico mechanic who has been missing for eight years.

After a woman reports a prowler, police find her Olympic bronze medalist husband dead in their backyard.

After a man is found brutally murdered inside his own bar, a murder mystery unfolds over the span of years; detectives believe it's a business deal gone bad and must remain steadfastly dedicated to the case after hitting several dead ends.

In the summer of 1991, a pair of half-siblings creates panic across southern California when they embark on a spree of random crimes of the worst kind, targeting people out doing everyday tasks.

Over a brutal 7-month stretch, a trio of brothers commit a series of increasingly violent crimes across the city of Richmond, leaving behind a growing body count; even after their apprehension, these brothers prove difficult to contain.

A pair of larger-than-life identical twins commit a series of brutal attacks in a small Tennessee town; with each crime, the brothers grow more emboldened; as time goes on and with little evidence against them, there's no telling how far they'll go.

When a correctional officer is murdered, it seems like an act of vengeance, but a love triangle is exposed; after learning his wife is having an affair, a husband plans to kill her lover and enlists the help of his brothers to carry out the task.

An Oregon grandmother found wounded on the roadside tells rescuers that her husband is missing after a boat sale went awry; a manhunt ensues but as authorities investigate, granny's wild story unravels to reveal a darker truth.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

An Army vet is found dead on his farm; it first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling she said, she said murder mystery.

A talented, young art student is murdered; the killer left no fingerprints and no DNA; police zero in on three fellow students and, soon, the dark portrait of a killer began to emerge.

Fitness executive Nicole Pietz is married to the man of her dreams, then she goes missing after failing to show up for dinner with her husband and friends.

Debbie Kelly and Lars Itzo make their marriage of opposites work; then, Debbie is shot dead in the dark of night; investigators ask whether her death is a case of mistaken identity or the bloody end to a marriage gone bad.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

After the wife of a college professor and heir of an oil empire is found murdered in her South Florida home, footage from the home's security camera could hold the key to finding the killer.

Tara Ord is a beautiful young woman with big dreams, then she vanishes without a trace; it will take years for determined cold case detectives to uncover the long buried clue that blows this case wide open.

After the wife of a college professor and heir of an oil empire is found murdered in her South Florida home, footage from the home's security camera could hold the key to finding the killer.

This feature documentary focuses its lens on a horrific crime in a bucolic college town after four University of Idaho coeds are brutally stabbed to death and a brilliant criminology student, Bryan Kohberger, stands accused of their murders. As prosecutors and defense attorneys sift through the evidence, the motive remains a baffling mystery.

Insights into the story of the private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family and the investigation into her death.

Insights into the story of the private royal, including a look at Diana's troubled marriage, her turbulent life in the royal family, and the investigation into her death.

When remains are found amid the rubble after a house fire, authorities soon discover the incident was no accident.

A cold-blooded serial killer lurks in the woods, stalking for his next victim; as Detective Bernie Nelson investigates, puzzling evidence leads him to more questions until one clue help crack the case wide open.

Phoenix Coldon vanishes; investigative reporter, Shawndrea Thomas, and retired deputy Police Chief Joe Delia attempt to unravel the mysterious unsolved case in the hope of finding justice for Phoenix.

Joe and Shawndrea follow up on a handful of Phoenix sightings since her disappearance and begin to question whether she'd been lured into a new life more dangerous than she could have anticipated; a surprising lead goes to an unexpected locale.

Julia Phillips orchestrates the murder of her boyfriend Melvin Roberts outside his home on her birthday in February 2010.

The murder of a Texas man reveals a deadly love triangle.

When a young Marine goes missing, police uncover a deadly plot.

A school nurse pulls the trigger; investigators must determine if it was in self-defense or if it was murder.

A man with both power and prestige managed to fool everyone, right up until his arrest.

Andrea Canning reflects on a case fueled by a rage so hot, it is seared into her memory; the battle between a wife and a mistress for one man's heart led down a deadly path, to a showdown on the highway.

A woman finds her father, a former FBI agent, murdered at his house; after digging into his past, police suspect the killer might be close to home; for Josh Mankiewicz, the toxic marriage at the heart of this case makes it unforgettable.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.