After a woman's beaten body is found on the side of a road, a grisly scene is uncovered at a nearby motel. As police begin to put the pieces together, a man comes forward with details of the crime, leading to a toxic throuple that ended in bloodshed.

A woman's friendship with a younger man falls under suspicion when her husband is brutally murdered.

Desperate teen lovers trigger a deadly chain of events.

A woman reconnects with her childhood boyfriend, but their rekindled romance falls under suspicion when someone close to them is savagely murdered.

A married woman falls in love with her prison pen pal, but their illicit romance has deadly consequences.

The stabbing murder of a 20-year-old woman in the suburbs of Philadelphia stymies detectives until a series of eerily similar murders six years later reveals a killer that has been hiding in plain sight all along.

When police respond to a domestic disturbance in a Bay Area suburb, it's unclear who on scene was the intended victim; further investigation reveals a body, a carefully collected kill kit, and a slew of evidence of a lethal plan for revenge.

The discovery of an Army captain's death in her El Paso, Texas, home shakes her tight-knit military community.

A thump heard by the children in a Carlsbad, Calif., home is the first clue to a shocking mystery that involves some family secrets.

The drug-related death of a 17-year-old girl sheds light on a new class of synthetic drugs that has law enforcement agencies on alert.

After four people turn up dead, investigators chase a serial killer who may be reenacting scenes from a horror movie released in the 1980s.

A couple made a fortune in gold but were headed for divorce when she was murdered; how she is killed makes this case unforgettable for Josh Mankiewicz; a video that seems to provide an alibi ends up pointing police to the killer.

A beautiful college student goes missing from her off-campus job, and a week later, investigators receive a mysterious phone call that reveals her plight.

Andrea Canning reflects on a cautionary tale that still inspires her; a man steals millions of dollars conning women and businesses over 25 years; one woman brings together a group of his victims to hold him accountable and face justice.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

Atlanta's thriving hip-hop scene is stunned when up-and-coming rapper Lil' Phat is executed in broad daylight; the case takes detectives into a world of mobsters and kingpins where the victim's lyrics may have foretold his demise.

A university for the deaf serves as a haven for its students. But when a freshman is brutally murdered in his dorm, the student body is plunged into terror. When it happens again, investigators race to uncover a connection and stop a serial killer.

A terrifying crash off a mountain road leaves one woman dead and her husband injured; the fatal accident raises suspicions as a family fights to expose the real story.

When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

A young pastor grieves after his wife dies in a house fire, but when shocking secrets are revealed, a community is shattered; a look at whether a prophecy could have predicted her death.

After a young mother is found brutally murdered in a cornfield, investigators learn that she was caught in a complex love triangle with career criminals.

The murder of Belinda Temple and her unborn baby was Kelly's most contentious case; after years of silence, she sets the record straight about what it took to finally get justice for the victims and their family against an unrelenting defense team.

When an expectant mother is found murdered, investigators discover the baby's father is married to another woman.

Two funnel-cake business owners are killed at the Iowa State Fair.

A deadly crime spree hits rural Kaufman, Texas, taking the lives of two prosecutors; the murders set off fear in the community about who is targeting the protectors of justice; the truth hits much closer to home than expected.

Grandparents fall under suspicion when their son's fiancé mysteriously disappears.

After a successful Korean-American business owner is killed during a home invasion, detectives believe his murder could be tied to a string of Philly crimes against businesses, until they uncover that the mastermind is someone much closer to home.

After a talented artist and musician goes missing, the investigation into his disappearance leads to a gruesome discovery in a historic Philly cemetery, revealing a sinister series of events.

A single mother finds romance with an old friend, but their lives are upended by a deadly secret.

Josh Mankiewicz wants to return to this case because the very thing Christina Morris feared most became her living nightmare; she goes out with friends and vanishes; the police question everyone, hoping the truth will lead them to her body.

A young couple becomes the primary suspects in the bizarre death of a police officer.

A small Ohio town is left in shock after a local coal miner is found fatally shot in his basement; as investigators dig into his personal life, a secret affair reveals a surprising suspect.

The death of a wealthy businessman exposes a bizarre murder conspiracy.

Exploring the stories through firsthand accounts told by people who are close to the crime; including investigators who dedicated their time to the cases and family members who are still trying to confront the tragedies that befell their loved ones.

When a crime spree leaves five dead, South Carolina authorities kickstart a multi-state investigation to capture a desperate couple on the run; the case grows more complicated when police are faced with conflicting accounts of the murders.

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.

After a woman's beaten body is found on the side of a road, a grisly scene is uncovered at a nearby motel. As police begin to put the pieces together, a man comes forward with details of the crime, leading to a toxic throuple that ended in bloodshed.

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.

A woman's friendship with a younger man falls under suspicion when her husband is brutally murdered.

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.

Desperate teen lovers trigger a deadly chain of events.

After years of suffering domestic abuse, a young woman is found murdered in her bathtub; among numerous clues, a hamburger bun proves the most incriminating.

Evidence that includes threatening emails, a missing person and an abandoned truck lead police to a woman's suspected killer, but they don't have the victim's body.

A woman reconnects with her childhood boyfriend, but their rekindled romance falls under suspicion when someone close to them is savagely murdered.

A woman has an accidental fall down a flight of stairs and appears to have hit her head, but the lack of blood splatter and misplaced shoes lead police to believe the fall was staged.

A church member gets gunned down after leaving choir practice; although witnesses see little and not much evidence exists, investigators learn that she had been having affairs for years.

A married woman falls in love with her prison pen pal, but their illicit romance has deadly consequences.

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.

When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

The stabbing murder of a 20-year-old woman in the suburbs of Philadelphia stymies detectives until a series of eerily similar murders six years later reveals a killer that has been hiding in plain sight all along.

In Columbia, S.C., a delusional young man is gunning down locals in cold blood with a 12-gauge shotgun; experts analyze this evil killer, as he leads detectives on a chase across state lines all the way to Texas.

When police respond to a domestic disturbance in a Bay Area suburb, it's unclear who on scene was the intended victim; further investigation reveals a body, a carefully collected kill kit, and a slew of evidence of a lethal plan for revenge.

The discovery of an Army captain's death in her El Paso, Texas, home shakes her tight-knit military community.

A thump heard by the children in a Carlsbad, Calif., home is the first clue to a shocking mystery that involves some family secrets.

Detectives suspect an inside job when a coin collector and his wife are found dead in their home with no sign of forced entry or evidence of theft.

After four people turn up dead, investigators chase a serial killer who may be reenacting scenes from a horror movie released in the 1980s.

A motocross champion and a model tie the knot in Las Vegas, never knowing their wedding vows will trigger a mysterious murder plot and a decades-long investigation.

A dental student rejects her boyfriend's marriage proposal, then dies under mysterious circumstances; when another victim dies under similar circumstances 14 years later, investigators must determine if the two cases are fatally intertwined.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

Eight days before the wedding of their dreams, a couple's plans are derailed by a brutal murder; a detailed investigation unravels a murder-for-hire plot that leads them to suspect a member of the wedding party.

Atlanta's thriving hip-hop scene is stunned when up-and-coming rapper Lil' Phat is executed in broad daylight; the case takes detectives into a world of mobsters and kingpins where the victim's lyrics may have foretold his demise.

The happiness of a second marriage is destroyed after a firefighter is felled by gun violence in front of his own home; his family, police and fellow firefighters search for justice and find out that the killer is someone he trusted with his life.

A terrifying crash off a mountain road leaves one woman dead and her husband injured; the fatal accident raises suspicions as a family fights to expose the real story.

Desiree Sunford, a beloved middle school art teacher in Yakima, Wash., is found dead in her home from multiple gunshots; as detectives dig into her marriage, they uncover a world of jealousy, sex and liaisons.

A young pastor grieves after his wife dies in a house fire, but when shocking secrets are revealed, a community is shattered; a look at whether a prophecy could have predicted her death.

Twenty-one-year-old art student Katelyn Markham vanishes just weeks before college graduation; the investigation unfolds over 13 years, uncovering lies, rage, and a betrayal that hits close to home.

The murder of Belinda Temple and her unborn baby was Kelly's most contentious case; after years of silence, she sets the record straight about what it took to finally get justice for the victims and their family against an unrelenting defense team.

Michelle Young was married to her college sweetheart and pregnant with their second child when she was murdered; in the search for her killer, detectives uncovered a marriage riddled with secrets but cracking this complicated case took years.

The neighbors enjoy mixing business with pleasure then a murder makes them face the reality that a killer is in their midst.

A deadly crime spree hits rural Kaufman, Texas, taking the lives of two prosecutors; the murders set off fear in the community about who is targeting the protectors of justice; the truth hits much closer to home than expected.

Judy Carlson lived in a painful limbo; her son disappeared without a trace; years went by and she may never have known his fate if not for a rookie detective's dogged work, but to solve this cold case, the investigator also need the help of a killer.

After a successful Korean-American business owner is killed during a home invasion, detectives believe his murder could be tied to a string of Philly crimes against businesses, until they uncover that the mastermind is someone much closer to home.

Steven B. Williams, a DJ with a golden voice, vanishes in a mystery that stretches from California to Montana; the clue to it all is wrapped in a napkin, tucked in a cabinet and hidden in a library.

After a talented artist and musician goes missing, the investigation into his disappearance leads to a gruesome discovery in a historic Philly cemetery, revealing a sinister series of events.

Jack Jessee was a family man who didn't seem to have an enemy in the world, up until the night he was killed; the case goes cold, but a relentless detective is determined to catch Jack's killer.

Larry McNabney has a thriving career and a wife he adores, but then vanishes; at the center of the twisted mystery, three lives tangle together in a love triangle, including one who hides a secret identity.

Josh Mankiewicz wants to return to this case because the very thing Christina Morris feared most became her living nightmare; she goes out with friends and vanishes; the police question everyone, hoping the truth will lead them to her body.

A small Ohio town is left in shock after a local coal miner is found fatally shot in his basement; as investigators dig into his personal life, a secret affair reveals a surprising suspect.

Exploring the stories through firsthand accounts told by people who are close to the crime; including investigators who dedicated their time to the cases and family members who are still trying to confront the tragedies that befell their loved ones.

When deadly gunfire erupts in an Austin, Texas home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect no one saw coming.

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.

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

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

After years of suffering domestic abuse, a young woman is found murdered in her bathtub; among numerous clues, a hamburger bun proves the most incriminating.

When deadly gunfire erupts in an Austin, Texas home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect no one saw coming.

Evidence that includes threatening emails, a missing person and an abandoned truck lead police to a woman's suspected killer, but they don't have the victim's body.

A woman has an accidental fall down a flight of stairs and appears to have hit her head, but the lack of blood splatter and misplaced shoes lead police to believe the fall was staged.

A church member gets gunned down after leaving choir practice; although witnesses see little and not much evidence exists, investigators learn that she had been having affairs for years.

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.

Russel Douglas is a troubled father hoping for a fresh start when he is found shot dead in his car; the investigation turns up few clues until an anonymous tipster sends detectives on an international manhunt to unravel a mystery.

When a Sarasota, Florida gallery proprietor is found murdered and posed like a grisly sculpture, everyone in the renowned art community fears for their lives wondering if it could be one of their own artists putting evil on display.

In Columbia, S.C., a delusional young man is gunning down locals in cold blood with a 12-gauge shotgun; experts analyze this evil killer, as he leads detectives on a chase across state lines all the way to Texas.

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

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

A 29-year-old woman goes missing.

A botched bank robbery and bomb-clad hostage lead Erie detectives through a scavenger hunt that starts with a pizza delivery, ends with multiple victims, and is concocted by a deranged perpetrator who has plans to kill again.

A motocross champion and a model tie the knot in Las Vegas, never knowing their wedding vows will trigger a mysterious murder plot and a decades-long investigation.

When a young mother and her newborn daughter vanish from Austin, detectives and FBI agents rush in to bring them home but instead uncover a heartbreaking motive, and a nine-month-long scheme to carry out the ultimate betrayal.

A dental student rejects her boyfriend's marriage proposal, then dies under mysterious circumstances; when another victim dies under similar circumstances 14 years later, investigators must determine if the two cases are fatally intertwined.

After the search for a missing Florida couple leads to a chilling discovery in their garage, detectives follow the money trail to a surprising false identity that unlocks a deadly interstate scheme.

Eight days before the wedding of their dreams, a couple's plans are derailed by a brutal murder; a detailed investigation unravels a murder-for-hire plot that leads them to suspect a member of the wedding party.

When a pregnant St. Louis elementary school teacher is found shot to death in her apartment, an unusual gun silencer, missing money, and the victim's own meal plan help unlock a murder plan.

The happiness of a second marriage is destroyed after a firefighter is felled by gun violence in front of his own home; his family, police and fellow firefighters search for justice and find out that the killer is someone he trusted with his life.

Venus Stewart stepped outside her door and vanished; investigators suspected her ex, but he had an alibi; a video gamer's tale had detectives seeing double and exposed the truth.

Desiree Sunford, a beloved middle school art teacher in Yakima, Wash., is found dead in her home from multiple gunshots; as detectives dig into her marriage, they uncover a world of jealousy, sex and liaisons.

Twenty-one-year-old art student Katelyn Markham vanishes just weeks before college graduation; the investigation unfolds over 13 years, uncovering lies, rage, and a betrayal that hits close to home.

Andrea Canning reflects on a story that hits close to home for her because of where it takes place; a South Carolina coroner arrives at the scene of a car accident to find his friend deceased and begins to think her death looks suspicious.

Michelle Young was married to her college sweetheart and pregnant with their second child when she was murdered; in the search for her killer, detectives uncovered a marriage riddled with secrets but cracking this complicated case took years.

Josh Mankiewicz returns to a case that took six years to report; a woman is found murdered after her friend hears her screaming on the phone, but the case sits cold until the mysterious death of her boyfriend's twin brother leads police to a suspect.

The neighbors enjoy mixing business with pleasure then a murder makes them face the reality that a killer is in their midst.

Judy Carlson lived in a painful limbo; her son disappeared without a trace; years went by and she may never have known his fate if not for a rookie detective's dogged work, but to solve this cold case, the investigator also need the help of a killer.

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.

Steven B. Williams, a DJ with a golden voice, vanishes in a mystery that stretches from California to Montana; the clue to it all is wrapped in a napkin, tucked in a cabinet and hidden in a library.

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.

Jack Jessee was a family man who didn't seem to have an enemy in the world, up until the night he was killed; the case goes cold, but a relentless detective is determined to catch Jack's killer.

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

Larry McNabney has a thriving career and a wife he adores, but then vanishes; at the center of the twisted mystery, three lives tangle together in a love triangle, including one who hides a secret identity.

International fugitive Nicholas Rossi faked his death as investigators closed in on him after rape and fraud allegations; Andrea Canning tracks down the man of many identities and looks back on one of the wildest interviews of her career.

New details in the murder case of a professional cyclist; interview with the plastic surgeon who convicted murderer sought out while on the run.

A tech titan is stabbed to death in San Francisco, sparking headlines and rumors; speculators are quick to draw conclusions, but Josh Mankiewicz revisits how video evidence revealed a far more complicated truth.

When deadly gunfire erupts in an Austin, Texas home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect no one saw coming.

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

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

A tech titan is stabbed to death in San Francisco, sparking headlines and rumors; speculators are quick to draw conclusions, but Josh Mankiewicz revisits how video evidence revealed a far more complicated truth.

When deadly gunfire erupts in an Austin, Texas home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect no one saw coming.

A wife and mother is taken into an unmarked car by a blond woman on a Monday morning, but police are unable to find any record of her arrest; for Josh Mankiewicz, this case reset the bar for brazen, and he revisits the reasons why.

Russel Douglas is a troubled father hoping for a fresh start when he is found shot dead in his car; the investigation turns up few clues until an anonymous tipster sends detectives on an international manhunt to unravel a 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.

The mystery of a Florida hotel owner's disappearance confounds family, friends and the detectives investigating the case.

A botched bank robbery and bomb-clad hostage lead Erie detectives through a scavenger hunt that starts with a pizza delivery, ends with multiple victims, and is concocted by a deranged perpetrator who has plans to kill again.

When a young mother and her newborn daughter vanish from Austin, detectives and FBI agents rush in to bring them home but instead uncover a heartbreaking motive, and a nine-month-long scheme to carry out the ultimate betrayal.

After the search for a missing Florida couple leads to a chilling discovery in their garage, detectives follow the money trail to a surprising false identity that unlocks a deadly interstate scheme.

When a pregnant St. Louis elementary school teacher is found shot to death in her apartment, an unusual gun silencer, missing money, and the victim's own meal plan help unlock a murder plan.

Venus Stewart stepped outside her door and vanished; investigators suspected her ex, but he had an alibi; a video gamer's tale had detectives seeing double and exposed the truth.

Andrea Canning reflects on a story that hits close to home for her because of where it takes place; a South Carolina coroner arrives at the scene of a car accident to find his friend deceased and begins to think her death looks suspicious.

Josh Mankiewicz returns to a case that took six years to report; a woman is found murdered after her friend hears her screaming on the phone, but the case sits cold until the mysterious death of her boyfriend's twin brother leads police to a suspect.

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.

International fugitive Nicholas Rossi faked his death as investigators closed in on him after rape and fraud allegations; Andrea Canning tracks down the man of many identities and looks back on one of the wildest interviews of her career.

A tech titan is stabbed to death in San Francisco, sparking headlines and rumors; speculators are quick to draw conclusions, but Josh Mankiewicz revisits how video evidence revealed a far more complicated truth.

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

A tech titan is stabbed to death in San Francisco, sparking headlines and rumors; speculators are quick to draw conclusions, but Josh Mankiewicz revisits how video evidence revealed a far more complicated truth.

A wife and mother is taken into an unmarked car by a blond woman on a Monday morning, but police are unable to find any record of her arrest; for Josh Mankiewicz, this case reset the bar for brazen, and he revisits the reasons why.

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.

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.

A woman's story about an abduction and murder helps reopen a decades-old case that has weighed heavy on a New York town.