When 78-year-old Ina Gross is viciously murdered, suspicion falls on one of her own children; the siblings stand together until the truth is revealed.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

The missing-persons case of 12-year-old Jonelle Matthews in Colorado remains a mystery for more than three decades until detectives narrow in on a suspect whose bizarre behavior after her disappearance hints at something much more sinister.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

When a devout single mother vanishes from her home, investigators fear she's been abducted by a group of teens hell-bent on a devilish plan; they race to find her before it's too late.

When a man goes missing in a rural small town in Tennessee, family members and detectives band together to uncover scandalous secrets fueled by greed and lust.

After a beloved father vanishes, his family and the police work tirelessly for four years to find him; a familiar witness comes forward and leads detectives to finally expose a diabolical conspiracy which may have been paid for by sexual favors.

When the body of a newlywed is spotted at the base of a cliff in Glacier National Park, local and federal authorities join forces for an investigation that will put their skills to the ultimate test.

After a well-known saddle maker passes away from an apparent heart attack, police find reason to question the natural death after rumors about drugs and embezzlement come to light.

When a beloved grandfather is found shot dead in his Florida home, detectives fear his missing ex-wife is also in danger; as they uncover a tangled web of romance, infidelity and betrayal, new questions arise about her involvement in the murder.

A father of four vanishes days before Christmas; what authorities believe to be a bond violation, unfolds into something evil.

Numerous patients at a Texas dialysis treatment center have gone into cardiac arrest, resulting in five deaths in one month; investigators work with the Centers for Disease Control to expose a chilling connection between the unexplained tragedies.

A seaside home becomes the scene of a gruesome double homicide when a couple is found dead during a welfare check. After shocking video evidence surfaces, investigators race to identify the killer and uncover a ruthless murder plot fueled by revenge.

An Iowa man is fatally shot, and his girlfriend claims self-defense; as their turbulent relationship is examined, her social media reveals a troubling pattern and sinister motive.

A respected soldier and beloved family man is found shot to death inside his home; investigators uncover a salacious love triangle and expose a murder-for-hire plot fueled by manipulation and greed.

Kelly and Abbey investigate the 1999 murder of a beloved churchgoing mother and grandmother, shot dead in her own home; with no known enemies, was she killed to send a cruel message to someone she loved?

In 2012, a tight-knit Las Vegas neighborhood is shattered by the murder of a mother and daughter in their home; investigators must analyze a crime scene soaked in rage to help stop a killer before they strike again.

A respected soldier and beloved family man is found shot to death inside his home; investigators uncover a salacious love triangle and expose a murder-for-hire plot fueled by manipulation and greed.

After a father is found dead in his family's Florida mansion, what at first appears to be suicide turns into a complex murder mystery where a mother's cryptic words and a son's suspicious behavior suggest either could be hiding a deadly grudge.

When a woman survives an alleged assault in the New Mexico desert and her purported attacker is found stabbed to death, investigators must get to the bottom of a bizarre murder plot driven by one suspect's obsession with the occult.

After a 911 hang-up, Pasco, Wash., police report to the caller's address and discover a beloved grandmother has been fatally shot; detectives will combat self-defense claims as evidence of a greedy scheme comes to light.

An aspiring young artist from Virginia is reported missing by his family. When his body is found weeks later, investigators must delve into his tumultuous family life and uncover an eyewitness who reveals the lies and deceit that led to his murder.

A man's body is discovered in his Texas home, hidden for weeks after his murder; when police discover that his family is missing as well, the investigation reveals a desperate escape attempt and a motive rooted in fear and betrayal.

A group of women help bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.

A group of women help bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

A victim's burning body is discovered one night in February and investigators are put on the trail of an elusive criminal whose desire for financial gain leads to murder.

When a household is targeted by gunfire twice in a short amount of time, investigators in rural Missouri sift through a community in search of a family's enemies, which leads them to a mastermind pulling strings.

An investigation into the mysterious death of a loving mother leads authorities to uncover a diabolical plot hatched close to home.

After an endearing World War II veteran and family man is laid to rest from apparent natural causes, a surprise witness surfaces with murder accusations, sparking a police investigation into a devious predator.

When a body is discovered in the trunk of a burning car, police in Ohio sift through the ashes for clues; as the years slip by without an arrest, the killer may have evaded capture.

The discovery of a body in a wildlife management area launches a murder investigation that forces a group of friends into the hot seat; when police think they find a surprising clue and possible hidden message the case breaks wide open.

An investigation into the murder of a military hero tests the bonds of military camaraderie and unravels a myriad of secrets, lies and hidden identities.

A woman's innocence is called into question after her husband dies from a mysterious malady and encourages detectives to take a deep dive into her past.

When a man is ambushed by a firestorm of bullets outside his home, investigators follow a twisted trail of suspects to a vindictive mastermind.

A secret affair between a woman and her church's pastor becomes public when they become suspects in a murder.

A college romance goes cold and ends with a murder that takes 22 years to solve.

A wife starts a New Year by ending her cheating husband's life.

A biology professor ends a faculty meeting with gunfire and reveals a surprising history of violence.

A respected soldier and beloved family man is found shot to death inside his home; investigators uncover a salacious love triangle and expose a murder-for-hire plot fueled by manipulation and greed.

Two teen girls are brutally murdered and one of their best friends could be responsible.

A wife claims an intruder killed her husband, but the real mystery turns out to be the couple's secret lives.

A woman confesses to her husband's unsolved murder.

A woman complains about her ex-husband, but her venting has deadly consequences.

An old flame comes back to rekindle a romance and ends up charged with murder and arson.

In 2012, a tight-knit Las Vegas neighborhood is shattered by the murder of a mother and daughter in their home; investigators must analyze a crime scene soaked in rage to help stop a killer before they strike again.

Kelly and Abbey investigate the 1999 murder of a beloved churchgoing mother and grandmother, shot dead in her own home; with no known enemies, was she killed to send a cruel message to someone she loved?

Former DEA agent Andrew Hogan details his search for Mexican drug lord Joaquín "El Chapo" Guzmán with never-before-seen videos and photographs.

When a young woman finds out that her boyfriend might have shot and killed a college football player out of revenge, she struggles with coming forward to officials, fearing she could lose her life.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system, including the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse and more.

After a young woman vanishes from her neighborhood, North Carolina detectives are snared in a tangled web of deceit as they uncover a vicious love triangle; it's a race against time to find a killer and the evidence they need to solve a dark mystery.

When a young mother in Newport, Maine, goes missing, the case goes cold until another mom suddenly vanishes, sparking an investigation that leads to a deadly game of cat and mouse and grisly discoveries in a rustic backyard.

A Milwaukee contractor is shocked when he discovers a body in a shallow backyard grave; the ghastly remains send investigators chasing an atrocious truth and have a community running scared from their own neighbors.

A man goes missing from an idyllic Idaho town, leaving detectives puzzled and a daughter driven to find her father; as the investigation unravels, a truth is revealed that is stranger than fiction and a killer no one ever sees coming.

When a man and his dog make a disturbing discovery in a backyard beach, a series of horrifying events unfold in a sleepy South Carolina town; investigators fear no one is safe as they desperately track a killer potentially hiding in plain sight.

When a long held secret in Florida threatens to expose a deadly truth, investigators work to unravel a baffling mystery; the dark life of a beloved mother may have put her in danger; a husband's desperate pleas may be the key to solving the case.

A young woman is found with a fatal head wound and her hand on a shotgun; her fiancé claims she killed herself, but grieving family members insist the suicide scene was staged; the case goes cold until a new prosecutor takes a second look.

A beloved grandmother is found with a red bathrobe sash knotted around her neck; her death appears to be a suicide until the medical examiner rules homicide; the victim's husband is charged with murder, but the case takes a surprising turn.

A car crash on a rural highway leaves one woman dead while her husband walks away unscathed; it appears to be a tragic accident, but one state trooper can't shake the feeling the crash is anything but routine.

Firefighters discover the charred remains of a young wife and mother, but the flames didn't kill her; she sustained a gunshot wound to the head, and the evidence points to her taking her own life; loved ones argue it's a case of murder.

A police officer discovers his young wife with a fatal gunshot wound from his service weapon and her death is ruled a suicide; investigators uncover a shocking story.

A husband discovers his wife face down in their bathtub; her death appears to be an accident, but questions are raised about how she drowned.

The killer removed the computer that links him to the murder of a woman and her soon-to-be ex-husband that he had met online.

A community is shocked when police discover a woman raped and murdered in broad daylight on a public trail.

A real estate developer is shot and his wife becomes the prime suspect, until the bullet is linked to a weapon reported missing 20 years ago.

A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.

A woman goes missing for a month with the only clues being a set of keys, a fingerprint and a code.

Police discover a mask near the crime scene and hope that it leads to the killer of a funeral director.

A killer assaults a young mother in her home, but despite meticulous washing of the crime scene, a single hair remains to lead authorities to the culprit.

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

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.

When an unknown body surfaces in the icy East River, Barbara Butcher joins detectives in a race to reconstruct the victim's identity using the few fragile clues left behind; pressure mounts when a report comes in that there may be more victims.

In 2012, a tight-knit Las Vegas neighborhood is shattered by the murder of a mother and daughter in their home; investigators must analyze a crime scene soaked in rage to help stop a killer before they strike again.

A Connecticut bank executive is targeted by criminals who force him to rob his own bank.

A Connecticut bank executive is targeted by criminals who force him to rob his own bank.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

When an ambitious college student is stabbed to death after a campus concert, the brutality of the attack leads police to believe it must have been personal; the resolution nine years later, however, proves darker than anyone could have imagined.

The vicious murder of an immigrant family's oldest son sends shockwaves through Orange County's tight-knit Vietnamese community and leads detectives on a multi-state chase that ultimately captures two killers.

A young mother is killed in her own bed in what seems to be a sudden crime of rage, but the true killer is shockingly revealed years later to be a twisted master of manipulation.

When a retired Marine captain is shot to death in his home, detectives quickly focus in on someone close to him. The apartment complex where the murder took place holds many secrets, which ultimately lead investigators to the real killers.

A wealthy couple is brutally attacked on their country estate just outside Atlanta; as detectives scour the property for leads, they discover a dark secret, unbeknownst to the community, that multiplies their suspect list tenfold.

The execution-style murder of three prominent businessmen in a posh downtown Atlanta hotel terrifies the city's burgeoning tourism industry; with only a blurry image of their killer, detectives race to track him down before he strikes again.

After a shootout in a quiet suburb leaves a strip club owner dead, police discover his murder may be part of an elaborate crime ring targeting Atlanta's high-end clubs; the truth behind who runs the syndicate shakes the city to its core.

The abduction and murder of a pregnant woman and her fiancé from their Decatur home sends shockwaves throughout Atlanta; ransom calls and voicemails turn into digital breadcrumbs for investigators to track the killers down.

Details expose how the Gucci family was undone by jealousy, backstabbing and, ultimately, an act of murder; insiders close to the fashion empire speak out about the murder of a prominent family member.

When Courtney Copeland is shot and killed, his mother investigates whether police detectives did enough to try to solve the case.

Keith Morrison reports on a dramatic undercover operation in Palm Beach, Fla., to save a wife and mother who has no idea she is in danger.

A district attorney in Pennsylvania went missing in 2005 under mysterious circumstances seven years after he investigated sex-abuse allegations made against Penn State football coach Jerry Sandusky.

Four years after a 28-year-old dies after hosting a New Year's Eve party, a jury must decide if it was suicide or murder.

Friends of accused murderer Robert Durst talk about his arrest in New Orleans and his previous whereabouts over 30 years.

When a woman returns two days after being reported abducted, authorities believe it's a hoax until a similar crime forces them to take another look.

New interviews with insiders reveal how career criminal Charles Manson convinced his followers to kill innocent victims and deliver him the fame he craved.

Rapper Meek Mill discusses controversies surrounding the criminal justice system, the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse, and other topics.

An investigation of abuse allegations against one of the owners of the religious reform school Circle of Hope.

Oscar Pistorius shoots and kills his girlfriend just eight months after competing in the London Olympics, telling police that he believed she was an intruder, and he was acting in self-defense.

A man is shot and killed while picking up his daughter for a court-ordered visit.

A Jacksonville, Fla., firefighter discovers a disturbingly violent scene in his darkened bedroom on a Halloween weekend.

A Jacksonville, Fla., firefighter discovers a disturbingly violent scene in his darkened bedroom on a Halloween weekend.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story.

In Kansas, two women go out for a night of revelry and encounter a host of old and would-be boyfriends, but by morning one of the women is found dead in her home and an investigation into her last hours begins.

A hospital staff member is found dead inside the hospital after going missing on a night shift.

When a college sorority sister is found brutally murdered on the day of a Texas football game in 1984, everyone is left to wonder who could have killed this raving beauty.

Three friends descend on the French Quarter in 2009 looking for a fun night out and it ends up being their last.

A woman is the target of three murder attempts, and her husband and his lover point fingers at each other.

A woman kidnaps and shoots her former fiance.

A wife is charged with killing her husband; she may have been wrongly accused.

The founder of a women's advocacy group plots to kill her son's father and his wife.

When a college student is found dead after a party, his mother is determined to find out what happened; what follows is one of Dennis Murphy's most memorable stories, as this tenacious mom fights to get her son's case in front of a jury.

A mother and son die in a house fire, and a man confesses to their murders; later, he says he was coerced; Keith Morrison returns to the case for a look at the interrogation and the circumstances that could've led to a false confession.

Reagan Tokes worked a late shift at a local restaurant, then went missing.

Josh Mankiewicz returns to a case; a popular teacher was killed in her home; there was an arrest, a trial, and a verdict.

A beloved couple is found murdered among a lifetime of valuable collectibles in their home; investigators want to know if there is a connection between the memorabilia and the murders.

A case Keith Morrison can't forget in which a teen's murder shakes a Nevada community and two unlikely people confess.

When a police officer's wife is shot to death in her bed, her parents' certainty that investigators have it wrong and their determination to untangle the mystery, makes the case unforgettable for Josh Mankiewicz.

Andrea Canning recalls a case in which investigators set up an elaborate sting operation to stop a murder-for-hire plot.

A man charged with murder denies committing it; the courtroom strategy provides a twist.

Keith Morrison reflects on the case of a Chicago woman from a big family who went missing.

Andrea Canning recalls the case of a popular kindergarten teacher who goes missing after shedding hundreds of pounds, and investigators find a link between her weight loss and her disappearance.

A man who was recently acquitted of the murder of his ex-girlfriend's 12-year-old son tells his story; interview with the victim's mother and key players in the case.

A man who was recently acquitted of the murder of his ex-girlfriend's 12-year-old son tells his story; interview with the victim's mother and key players in the case.

The parents of a missing South Carolina woman speak out about her disappearance.

When a retired cop is found shot to death on a subway train in Brooklyn, detectives soon discover that his death is linked to two other seemingly random shootings in the previous thirteen hours.

When a sibling dispute over money turns into a double murder, all of Brooklyn is on alert for the missing killer; days turn into months and then years, as the NYPD manhunt turns into a national and international chase for the fugitive.

When the body of a young woman is found hidden in tall reeds in a quiet park near her home, fear grips the Queens neighborhood; after months of ceaseless investigation, a clue from the past leads NYPD detectives to an unexpected killer.

Days before the New Millennium, a jailed informant calls the NYPD with a cryptic tip about a murder, sending detectives on a hunt through dozens of New York's high-rise buildings, in search of a crime scene - and a body.

An army reservist disappears; his wife appears to have cooked the evidence.

A crime novelist's plot for her husband's untimely death.

Rebecca Sears and her son, are accused of robbing and beating their neighbor to death in March 2009.

A woman gives her husband a deadly dose of morphine.

Boardinghouse guests are tortured and murdered.

A man and his girlfriend are attacked; the evidence leads the detectives to the ex-wife.

A former teacher's plea of self-defense is called into question.

A woman claims it was an accident when she ran over her husband.

A young widow blames depression for her husband's death.

A discovery in the woods leads police to a troubled marriage, a drug overdose and a deadly plot.

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.

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

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

Kelly and Abbey investigate the 1999 murder of a beloved churchgoing mother and grandmother, shot dead in her own home; with no known enemies, was she killed to send a cruel message to someone she loved?

In 2012, a tight-knit Las Vegas neighborhood is shattered by the murder of a mother and daughter in their home; investigators must analyze a crime scene soaked in rage to help stop a killer before they strike again.

Investigation into a deadly house fire.

Investigation into a deadly house fire.

When two tragic deaths occur within one week of each other in a wealthy city in California, families begin to wonder what happened inside a beachfront mansion.

A soon-to-be bride is caught in the middle of a twisted murder plot that has detectives questioning if she played a role in it.

When a young woman fails to show up to work and her mother rushes to her home to try to find her, what she discovers begins an investigation that leads to a suspect no one imagined.

An in-depth look at the journalists who exposed the dangers of cult leader Jim Jones.

A San Diego mother suddenly vanishes in 2014; nearly two years later, her body is found in San Diego Bay, but medical examiners say she has only been dead for a month or two.

When a police officer goes missing, it becomes apparent he is the victim of a jealous wrath.

Three members of a wealthy family are gunned down in their own home; with little evidence to go on, investigators embark on a multi-year surveillance operation to see if they can prove their instincts are correct.

A beloved entrepreneur is murdered in his office; a secret double life is quickly revealed, and despite mountains of suspicion, lies and motives, his killer is not who one would assume.

A man is found dead in the shower, and police have only two suspects, but to figure out who killed him and why, is not as cut and dry as it may seem.

A woman vanishes during her nightly walk in 2018; the last time she's seen alive is by an ATM security camera that could hold the key to solving her disappearance.

Kelly and Terri investigate the 2015 homicide of a beloved father, veteran and Little League coach; a reexamination of the crime scene reveals a terrifying clue into who may have killed him.

For the 100th case, the 2007 murder of a popular college student who was stabbed to death in her bed; help is needed from forensic pathologist, digital forensics expert and DNA lab to solve the case.

The Cold Justice team continues its investigation into the murder of a popular 18-year-old college student.

Kelly and Abbey investigate the 1999 murder of a beloved churchgoing mother and grandmother, shot dead in her own home; with no known enemies, was she killed to send a cruel message to someone she loved?

Kelly and Tonya look into the murder of a hard-working mother who was stabbed and bludgeoned to death; the investigation uncovers a secret affair and a revelation as shocking as the murder itself.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher and a rookie homicide detective unravel how a seemingly straightforward crime conceals a chain of forensic contradictions, and a killer no one saw coming.

Kelly and Steve team up with the Clinton County Sheriff's Office to solve the heartbreaking cold case of a young mother who vanished, leaving only her wedding rings behind; did she walk away, or was she murdered?

Kelly and Tonya look into the murder of a hard-working mother who was stabbed and bludgeoned to death; the investigation uncovers a secret affair and a revelation as shocking as the murder itself.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher and a rookie homicide detective unravel how a seemingly straightforward crime conceals a chain of forensic contradictions, and a killer no one saw coming.

When an elderly woman survives an attempted murder, investigators connect the dots on the deaths of other local senior citizens where families reported missing jewelry, leading to the hunt for a serial killer in Texas.

Driving home from a night out at a club, a nurse's aide strikes a homeless man on the freeway. The choices she makes after the crash, and her attempt to keep them a secret, are revealed when friends testify against her in a dramatic trial.

Investigators seek answers when a prosecutor and a district attorney and his wife are murdered within a couple of months of each other.

Investigators seek answers when a prosecutor and a district attorney and his wife are murdered within a couple of months of each other.

Police suspect a murder-for-hire plot when a realtor is attacked and left for dead at a home showing and begin investigating his family and business partners.

A DNA breakthrough in a murder case that is more than a decade old leads two determined detectives to surprising suspects.

Investigators follow the trail of a seemingly untraceable late-night call as they search for the killer of businesswoman Peggy Nadell.

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

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 son is reported missing after he fails to return home from a date; various Mississippi agencies unite to navigate his last moments and a false lead that will expose a cold-blooded scheme.

When a man is found dead at a secluded rest stop, Ohio police suspect foul play within his family; as evidence builds, tensions rise, and reveal the work of a criminal mastermind intent on manipulating everyone around them.

A woman's sudden death is initially ruled a suicide, but when new information comes to light, a shocking conspiracy is revealed; investigators unravel a tangled web of lies, betrayal and jealousy to uncover the truth behind her murder.

When a beloved father in Dothan, Ala., narrowly survives a car bombing, a man hunt is launched to find who set the trap; as the investigation unfolds, police uncover a murderous plot hatched by a scorned ex-lover.

An Iowa man is fatally shot, and his girlfriend claims self-defense; as their turbulent relationship is examined, her social media reveals a troubling pattern and sinister motive.

A respected soldier and beloved family man is found shot to death inside his home; investigators uncover a salacious love triangle and expose a murder-for-hire plot fueled by manipulation and greed.

A promising college student disappears after a Halloween party; as detectives hunt for any sign of the missing woman, they uncover a volatile love triangle and a brutal murder driven by manipulation and jealousy.

Kelly and Tonya look into the murder of a hard-working mother who was stabbed and bludgeoned to death; the investigation uncovers a secret affair and a revelation as shocking as the murder itself.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher and a rookie homicide detective unravel how a seemingly straightforward crime conceals a chain of forensic contradictions, and a killer no one saw coming.

A promising college student disappears after a Halloween party; as detectives hunt for any sign of the missing woman, they uncover a volatile love triangle and a brutal murder driven by manipulation and jealousy.

After the body of a small-town Mississippi woman is found in her garage and a mystery woman is caught red-handed on scene, police must work to identify a romantic rival obsessed with getting rid of the competition.

A noise complaint turns into a murder investigation for Florida police after they discover a man has been fatally shot in his home; years pass before an unexpected confession will expose a murder-for-hire plot fueled by betrayal and greed.

When a local musician is killed in a deliberate hit and run, rumors around his small South Carolina town suggest it's the result of an escalating family feud; the investigation reveals a killer hiding in plain sight and driven by revenge.

A North Dakota man dies in the hospital from an apparent heatstroke; when the coroner discovers the cause of death was poisoning, authorities launch a criminal investigation that leads them to a calculating killer with a multi-million-dollar motive.

A Virginia father is reported missing two years after he was last seen; as the investigation ensues to track down his last location, a disturbing discovery will expose two mysterious deaths tied to a greedy scheme.

During a weekend away, a longtime married couple go on an afternoon hike that ends in tragedy; a multitude of evidence makes the mystery hard to untangle.

During a weekend away, a longtime married couple go on an afternoon hike that ends in tragedy; a multitude of evidence makes the mystery hard to untangle.

When a woman is found murdered in her bed, her husband and her son accuse each other of being the killer.

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.

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

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

A promising college student disappears after a Halloween party; as detectives hunt for any sign of the missing woman, they uncover a volatile love triangle and a brutal murder driven by manipulation and jealousy.

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 bar fire reveals a murder and a woman's secret addiction.

A deadly fight exposes a mother's secrets.

When a garbage bag containing a young woman's body is dumped in a NYC tunnel, Barbara Butcher and a rookie homicide detective unravel how a seemingly straightforward crime conceals a chain of forensic contradictions, and a killer no one saw coming.

Kelly and Tonya look into the murder of a hard-working mother who was stabbed and bludgeoned to death; the investigation uncovers a secret affair and a revelation as shocking as the murder itself.

After losing a hotly contested custody battle, a woman disappears with her 11-month-old daughter; the child's father searches four continents for almost two decades before reaching an emotional conclusion.

A 33-year-old tutor is accused of having an illicit relationship with a teenage student after a racy photograph is discovered on a cell phone; later, her stunning defense will lead to an emotional courtroom battle.

The case of Johnny Hincapie, whose conviction for the 1990 murder of a Utah tourist in New York - a case that represented a tipping point in the city's law enforcement - was overturned after 25 years.

When former NFL star Antonio Armstrong and his wife, Dawn, are murdered in their own bed, detectives uncover a stray bullet, threatening note and web of complicated family dynamics that ultimately unravel, revealing a dark betrayal.

After a police chase ends in tragedy, Special Prosecutor Kelly Siegler returns to her rural roots to seek justice for a murdered game warden and his devastated family.

A paroled killer linked to the disappearance of young women forces police into a desperate manhunt; this shocking case unfolds against a backdrop of unfortunate legal and parole decisions that set Kenneth McDuff loose to become a serial killer.

The ambush-style murder of a human rights activist confuses investigators; but when her boyfriend's brother is also gunned down, police uncover a plan to commit murders in the name of honor.

Soon after Cathy and Jeff Lamb rekindle their marriage, Cathy is found savagely beaten to death in their home; with the couple's three dogs as their only witnesses, detectives untangle a number of complex relationships to find her killer.

When 24-year-old Terry Rouse disappears near a southern Georgia swamp, his devastated mother relentlessly pursues a one-woman investigation that runs parallel to law enforcement; what she and the detectives ultimately uncover shocks everyone.

The last precious moments of rising star Maple Batalia are captured on a security camera before she's gunned down at her college campus in British Columbia; a community grieves as a mother's anguished pleas for justice capture national attention.

Dino and Clara Pantazes run a successful bail bond business and their 20-year marriage is seemingly perfect; when Clara is gunned down at home, however, detectives wonder if an angry client is to blame or if there is more to their fairy-tale story.

In 2012, Brian Shookman, a young father who traveled to the area to attend a family reunion, vanished and as the list of suspects grows, the team seeks to uncover the truth.

In Texas, the brutal 1984 killing of Johnnie Albritton, an elderly store owner known for having a wife with a violent temper, occured.

In 1993 a man was allegedly shot and buried by a group of dangerous friends and the detectives will need to pit them against each other to break the case and bring justice to his family.

In 2016, Stacey Devine, a hard-working mother, was strangled to death and dumped in a ditch.

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.

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.