When a couple is gunned down in front of their three young boys, a web of lies and custody battle lead detectives to a suspect; with one son's future at stake, they travel to a remote mountain to gather evidence they need to catch the killer.

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.

While out deer hunting, a young father of two is murdered in the woods; 25 years later, a revelation sparks a new investigation and leads police to uncover an unthinkable conspiracy between those closest to the victim.

When a 60-year-old woman vanishes without warning, investigators discover a family blended from multiple marriages that is simmering with secrets and grudges that may have boiled over into murder.

Lies, deception and a love triangle lead to the murder of a wealthy American on a road in Mexico.

When a missing young mother turns up murdered on the outskirts of New York City, it confirms a close-knit family's worst fears; the investigation is hindered by a series of lies, before a secret affair is uncovered, turning brothers into adversaries.

Lead investigators and family members speak about the murder of Colorado mother Kelsey Berreth, whose disappearance made national headlines after she was last seen grocery shopping on Thanksgiving in 2018.

Lead investigators and family members speak about the murder of Colorado mother Kelsey Berreth, whose disappearance made national headlines after she was last seen grocery shopping on Thanksgiving in 2018.

When the mysterious death of a 23-year-old mother in New Mexico goes unsolved, her family searches for answers.

When beloved ER nurse and mother Becky Bliefnick is found shot to death in her bathroom in Quincy, Ill., residents fear a killer has come to town; detectives discover this seemingly perfect Midwestern community has monsters of its own.

Two young girls in Washington are snatched in broad daylight while riding their bikes; the case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery.

Popular high school senior Chris Daigle mysteriously disappears from Missouri City, Texas; for nearly a decade, his mother will stop at nothing to get answers while keeping friends close but enemies closer.

The father of an Alabama teenager calls the police after he returns home to find his son had thrown a party, leaving the place trashed; 11 minutes after the deputy leaves the house, another 911 call is placed reporting a shooting at the residence.

It's a mystery with a mind-boggling twist; the deputy warden's wife claimed she was kidnapped by an escaped convict and held captive for more than a decade; but was she really a hostage or a willing accomplice.

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 a 71-year-old man is found shot dead in a field, investigators suspect his killing is the result of a robbery; as new evidence surfaces, detectives develop a theory to explain his death and only a voice from the grave can prove it.

In Marietta, Ga., a businessman is savagely murdered in his home; the violent and personal attack leads the detectives to look for the killer among those who knew him best.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

Twenty-year-old Tiffanie Adams is eight months pregnant when she suddenly disappears; to solve the mystery, police must expose toxic relationships and deadly secrets.

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.

An Ivy League student and a music producer's criminal activities are discovered when a failed drug deal leads to murder.

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.

The love affair between a police officer and a criminal leads to murder.

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 a missing man's bullet-riddled body is found off the side of a road, police must dig into his complicated past to uncover the truth; the case hits a standstill until information about the victim's car comes to light and reveals a toxic romance.

Buried in the desert lies more than just a body, but a legacy that rides the line of love and hate; Barbara Butcher investigates a murder, where the motive festers across generations before exploding into violence.

Houston police search for a serial killer preying on young women until a local man's DNA finally reveals the culprit; upon his arrest, the killer's sister and daughter learn his true identity.

A cherished grandmother is found murdered in her Bronx apartment; Barbara Butcher returns to the scene to retrace every step - and decode how the victim's body holds clues to a carefully hidden motive.

The ex-girlfriend of the self-proclaimed Crossbow Cannibal reveals the mental and physical abuse she endured for years at the hands of one of the U.K.'s most heinous serial killers.

Barbara Butcher steps back into the 1997 murder of Jonathan Levin, a beloved Bronx teacher, and reveals how her inestigation withstood intense scrutiny and helped detectives uncover a truth more disturbing than anyone could imagine.

Spree killer Joanne Dennehy's daughter Shianne shares how she has struggled to come to terms with the realities of being the child of Britain's most dangerous woman.

A missing man's search ends with a morbid discovery: his body, bound and murdered, inside his own car; the brutality is unmistakable, and to Barbara Butcher, so is the staging; a closer look at the evidence reveals a calculated plot to kill.

Peter Tobin raped and murdered Angelika Kluk in 2006, and with the help of his ex-wife, Cathy Wilson, a groundbreaking investigation unearthed more victims and revealed him to be a serial killer.

When suitcases of dismembered remains wash ashore in Virginia Beach, the investigation leads back to New Jersey, where a facade of a perfect family man breaks to reveal the reality.

Road to Nowhere; Special episode of "Cold Justice" featuring insights from Kelly Siegler and behind-the-scenes facts.

For over a decade, El Chapo evaded authorities but one man was determined to catch the infamous kingpin; Former DEA agent Andrew Hogan comes out of the shadows to detail his search and capture with never-before-seen videos and photographs.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

Road to Nowhere; Special episode of "Cold Justice" featuring insights from Kelly Siegler and behind-the-scenes facts.

The long-lost confession tapes of the man who claimed to be the Boston Strangler have been uncovered. Suppressed for decades, these exclusive tapes reignite doubts about his confession, inspiring experts to reexamine the evidence and suspects.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

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 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.

Lies, deception and a love triangle lead to the murder of a wealthy American on a road in Mexico.

A son uncovers a dark family conspiracy when he questions his mother following a man's apparent suicide.

A son uncovers a dark family conspiracy when he questions his mother following a man's apparent suicide.

When Ohio mother Heather Bogle goes missing, a detective identifies multiple suspects, until he himself comes under scrutiny for his investigation.

Two young girls in Washington are snatched in broad daylight while riding their bikes; the case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery.

The father of an Alabama teenager calls the police after he returns home to find his son had thrown a party, leaving the place trashed; 11 minutes after the deputy leaves the house, another 911 call is placed reporting a shooting at the residence.

It's a mystery with a mind-boggling twist; the deputy warden's wife claimed she was kidnapped by an escaped convict and held captive for more than a decade; but was she really a hostage or a willing accomplice.

The youngest son of a church-going family man finally learns the truth about his father when the man's second wife is found dead in their hot tub, and police look back at the suspicious drowning death of his first wife.

When a 71-year-old man is found shot dead in a field, investigators suspect his killing is the result of a robbery; as new evidence surfaces, detectives develop a theory to explain his death and only a voice from the grave can prove it.

A serial killer stalks and viciously attacks young women in the suburbs of London while evading British police; when the killer's ex-girlfriend reports him for abuse, little does she know just how pivotal her testimony will be in bringing justice.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

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.

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.

Examining the notorious case of the Menendez brothers; their background, their crime and the trials that made history.

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.

Buried in the desert lies more than just a body, but a legacy that rides the line of love and hate; Barbara Butcher investigates a murder, where the motive festers across generations before exploding into violence.

In a jailhouse interview, Traci Wolfe reveals the catalyst that sparked an uncontrollable rage and ended in her husband's gruesome death; holding nothing back, she now reflects on the crime that landed her in prison for life.

A cherished grandmother is found murdered in her Bronx apartment; Barbara Butcher returns to the scene to retrace every step - and decode how the victim's body holds clues to a carefully hidden motive.

Serving a life sentence for the brutal stabbing of her own mother, Taylor Marks discusses the murder on camera for the first time ever; she claims she wasn't the mastermind behind the crime, but she knows who is.

Barbara Butcher steps back into the 1997 murder of Jonathan Levin, a beloved Bronx teacher, and reveals how her inestigation withstood intense scrutiny and helped detectives uncover a truth more disturbing than anyone could imagine.

Breaking her silence for the first time, Gloria Aiken sits down for an interview to plead her case in the 2008 murder of her longtime partner; she reflects on the events that led to her arrest and hopes to clear her name.

A missing man's search ends with a morbid discovery: his body, bound and murdered, inside his own car; the brutality is unmistakable, and to Barbara Butcher, so is the staging; a closer look at the evidence reveals a calculated plot to kill.

Eighteen years into her prison sentence, Coty Martinez opens up about the multistate killing spree that landed her behind bars; claiming to have been a victim herself, she attempts to explain how she ended up on a dark path.

When suitcases of dismembered remains wash ashore in Virginia Beach, the investigation leads back to New Jersey, where a facade of a perfect family man breaks to reveal the reality.

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.

Road to Nowhere; Special episode of "Cold Justice" featuring insights from Kelly Siegler and behind-the-scenes facts.

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 woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

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.

Road to Nowhere; Special episode of "Cold Justice" featuring insights from Kelly Siegler and behind-the-scenes facts.

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 woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

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.

When a beloved mother goes missing on her birthday, detectives are faced with several possible suspects before focusing on a co-worker with a shocking past who will do anything to hide their true identity.

In the California mountains, a young father calls 911 to report that he had been in a shoot-out with a car full of strangers; authorities wonder if it was self-defense or something else.

In the California mountains, a young father calls 911 to report that he had been in a shoot-out with a car full of strangers; authorities wonder if it was self-defense or something else.

Investigators didn't know if Kathy Heckel was a missing person or murder victim; decades later the case is reopened by a new detective.

After a small-town man is found shot to death at a Missouri roadside park, the evidence trail leads detectives further into the man's complicated past where they uncover a wicked plot that no one saw coming.

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

Police follow a lead in a missing persons investigation to a 115-acre farm, unearthing the site of a gruesome crime and a seductive killer that will go down in New Hampshire history.

Nikki Whitehead was a single mom working toward a brighter future; she found love, moved into a nice neighborhood and enrolled in college, then tragedy struck; police searched for answers but one thing was certain: this crime was personal.

A loving father agrees to give his ex-wife a chance to reconcile; when his loved ones can't reach him, an unexpected tip is brought to Oklahoma police that uncovers a toxic love triangle and horrific crime scene.

The youngest son of a church-going family man finally learns the truth about his father when the man's second wife is found dead in their hot tub, and police look back at the suspicious drowning death of his first wife.

When a beloved family man dies in a house fire, his wife and children must grapple with his unexpected loss.

A serial killer stalks and viciously attacks young women in the suburbs of London while evading British police; when the killer's ex-girlfriend reports him for abuse, little does she know just how pivotal her testimony will be in bringing justice.

When a professional basketball star is gunned down in his hometown of Memphis, Tenn., the case goes cold for nearly a decade; after a new team of investigators takes over, it uncovers the missing murder weapon and a mastermind close to home court.

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 62-year-old man bails his stepdaughter out of jail for attempted murder and is soon found dead, but investigators learn his death may not be what it seems.

Examining the notorious case of the Menendez brothers; their background, their crime and the trials that made history.

Years after a beloved father is accidentally shot in his home, the family matriarch mysteriously vanishes; as a second investigation launches, a shocking confession reveals a family secret about how far a son is willing to go for his mother.

In a jailhouse interview, Traci Wolfe reveals the catalyst that sparked an uncontrollable rage and ended in her husband's gruesome death; holding nothing back, she now reflects on the crime that landed her in prison for life.

A 911 call in an upscale neighborhood leads police to the bodies of a mother and daughter in what appears to be a murder-suicide; investigators discover a trail of deceit that exposes an unexpected killer.

Serving a life sentence for the brutal stabbing of her own mother, Taylor Marks discusses the murder on camera for the first time ever; she claims she wasn't the mastermind behind the crime, but she knows who is.

A 32-year-old man vanishes in Fort Meyers, Fla., and police quickly link an abandoned, blood soaked vehicle to his case, but investigators must determine if this missing man is a victim or killer.

Breaking her silence for the first time, Gloria Aiken sits down for an interview to plead her case in the 2008 murder of her longtime partner; she reflects on the events that led to her arrest and hopes to clear her name.

Investigators follow a surveillance trail to uncover the events that led to the death of an Arizona man, who is shot in his garage before he is able to read the results of a paternity test.

Eighteen years into her prison sentence, Coty Martinez opens up about the multistate killing spree that landed her behind bars; claiming to have been a victim herself, she attempts to explain how she ended up on a dark path.

When a loving father is gunned down in upstate New York, a hunt for the gunman crosses state lines; as several suspects are brought in, investigators must determine who's telling the truth to reveal the mastermind.

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.

A Texas woman discovers her husband's brutally stabbed body in their ransacked home and police suspect he was the victim of a robbery gone wrong, but the investigation reveals a torrid love affair.

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.

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.

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.

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.

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.

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 prominent private investigator is reported missing after he fails to return from a business trip; when the case goes cold, a former Russian spy assists the FBI in a sting operation to uncover the truth behind his disappearance.

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.

Police believe that a dependable Florida man left town of his own volition when he fails to show up for work, but as years go by, town rumors lead police to unearth a gruesome crime.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

After a loving father is found dead in the bedroom of his Oklahoma home by his ex-wife, Broken Arrow police must unpack a complex family dynamic and a loyalty based on greed in order to get answers.

When a fearless Las Vegas journalist is ambushed outside his home, the surveillance video shocks the city; the body tells a deeper story, one that may reveal what the camera missed.

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.

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.

When a beloved mother goes missing on her birthday, detectives are faced with several possible suspects before focusing on a co-worker with a shocking past who will do anything to hide their true identity.

When a model and up-and-coming YouTube celebrity turns up dead, police question her husband in the hope he can shed some light on the situation.

When a model and up-and-coming YouTube celebrity turns up dead, police question her husband in the hope he can shed some light on the situation.

Former mayor and prominent attorney Melvin Roberts is larger than life; when cops find him dead in his driveway, it marks the start of a tough case.

A documentary filmmaker sets out to tell the story of the biggest serial killer case in California history and uncovers a terrifying tale that begins with the disappearance of Paul Cosner.

After a small-town man is found shot to death at a Missouri roadside park, the evidence trail leads detectives further into the man's complicated past where they uncover a wicked plot that no one saw coming.

With the discovery of Leonard Lake's cabin, investigators find the hidden cell where Lake kept his victims; they also unearth Lake's recorded manifesto, which details his depraved plans for Operation Miranda.

Police follow a lead in a missing persons investigation to a 115-acre farm, unearthing the site of a gruesome crime and a seductive killer that will go down in New Hampshire history.

An international manhunt ensues when Leonard Lake's accomplice, Charles Ng, flees the country; the victims' families, including Paul Cosner's sister, fight to bring Ng to justice and answer for the crimes he committed with Lake.

A loving father agrees to give his ex-wife a chance to reconcile; when his loved ones can't reach him, an unexpected tip is brought to Oklahoma police that uncovers a toxic love triangle and horrific crime scene.

Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa; Sarah re-examines her and Alissa's childhood, breaking through years of manipulation to reconstruct the truth.

When a beloved family man dies in a house fire, his wife and children must grapple with his unexpected loss.

When a professional basketball star is gunned down in his hometown of Memphis, Tenn., the case goes cold for nearly a decade; after a new team of investigators takes over, it uncovers the missing murder weapon and a mastermind close to home court.

Delving into the story surrounding the Turpin family and the parents, David and Louise, who have been charged with keeping their children shackled and starved within the four walls of their own Perris, Calif., home.

A 62-year-old man bails his stepdaughter out of jail for attempted murder and is soon found dead, but investigators learn his death may not be what it seems.

Texas Rangers are brought in to investigate the most recent death when a San Angelo, Texas, woman loses three romantic partners in the span of three years.

Eight family members are executed in one night as detectives must unearth the hidden motive to track down the killers; while the community mourns, investigators analyze bloody footprints to determine which path leads to the truth.

Years after a beloved father is accidentally shot in his home, the family matriarch mysteriously vanishes; as a second investigation launches, a shocking confession reveals a family secret about how far a son is willing to go for his mother.

As investigators zero in on the Wagners, the family starts to feel the heat and begin undercutting each other; a message from Hanna Rhoden reveals a shocking possible motive for the murders.

A 911 call in an upscale neighborhood leads police to the bodies of a mother and daughter in what appears to be a murder-suicide; investigators discover a trail of deceit that exposes an unexpected killer.

At George Wagner's trial, stunning testimony exposes secrets throughout the close-knit community; a motive that caused a family of eight to be murdered in four locations in one night is revealed.

A 32-year-old man vanishes in Fort Meyers, Fla., and police quickly link an abandoned, blood soaked vehicle to his case, but investigators must determine if this missing man is a victim or killer.

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.

Investigators follow a surveillance trail to uncover the events that led to the death of an Arizona man, who is shot in his garage before he is able to read the results of a paternity test.

When a loving father is gunned down in upstate New York, a hunt for the gunman crosses state lines; as several suspects are brought in, investigators must determine who's telling the truth to reveal the mastermind.

Three fingerprints on a window screen are enough for a print examiner to uncover the work of a serial killer.

A Texas woman discovers her husband's brutally stabbed body in their ransacked home and police suspect he was the victim of a robbery gone wrong, but the investigation reveals a torrid love affair.

With a long list of suspects, forensic experts agree on one thing in this brutal murder: the killer knew his victim.

The only lead to finding a serial killer on the loose is a bloody fingerprint on the body of a victim.

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.

Tests reveal the race, eye color and hair color of the person responsible for killing two young women on Halloween night.

A convicted arsonist claims his innocence and with no lawyer, no money and only a fifth-grade education, sets out to prove it.

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 canine behaviorist uses the family dogs, who are the only witnesses, to find the murderer of their owner.

Investigators see through a killer trying to cover his tracks by staging the crime scene to learn what really happened.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

In 1984 police failed to convict the murderer of a college student; new technology may finally help the police to catch her killer.

A prominent private investigator is reported missing after he fails to return from a business trip; when the case goes cold, a former Russian spy assists the FBI in a sting operation to uncover the truth behind his disappearance.

Police investigate a young woman found murdered two weeks after reporting a road rage incident; evidence leads not to the aggressive driver, but one of their own.

When a single mother is murdered, her brother vows to find the person responsible for the death of his sister, even if it takes more than 30 years.

Police believe that a dependable Florida man left town of his own volition when he fails to show up for work, but as years go by, town rumors lead police to unearth a gruesome crime.

A husband and wife get shot and their 16-year-old daughter manages to escape, but investigators suspect she may be involved in the murder.

After 10 years, a witness decides to do the right thing about the rape and murder of a young hairdresser.

After a loving father is found dead in the bedroom of his Oklahoma home by his ex-wife, Broken Arrow police must unpack a complex family dynamic and a loyalty based on greed in order to get answers.

Police investigate the possibility of a hate crime when two women go missing and are later found murdered.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

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.

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.

When Linda Curry sickens and dies under suspicious circumstances, police and doctors are puzzled, then her close friends and family members speak up.

A 21-year-old college senior is shot and killed in a public park just months before her graduation.

Rachel Anderson is a vivacious single mother whose world revolves around her children, then she fails to show up for work one day; her disappearance may have something to do do with the terrifying telephone calls she's been receiving.

A documentary filmmaker sets out to tell the story of the biggest serial killer case in California history and uncovers a terrifying tale that begins with the disappearance of Paul Cosner.

With the discovery of Leonard Lake's cabin, investigators find the hidden cell where Lake kept his victims; they also unearth Lake's recorded manifesto, which details his depraved plans for Operation Miranda.

An international manhunt ensues when Leonard Lake's accomplice, Charles Ng, flees the country; the victims' families, including Paul Cosner's sister, fight to bring Ng to justice and answer for the crimes he committed with Lake.

Sarah Turney became a viral sensation when she posted suspicions on social media that her dad killed her sister, Alissa; Sarah re-examines her and Alissa's childhood, breaking through years of manipulation to reconstruct the truth.

Delving into the story surrounding the Turpin family and the parents, David and Louise, who have been charged with keeping their children shackled and starved within the four walls of their own Perris, Calif., home.

Eight family members are executed in one night as detectives must unearth the hidden motive to track down the killers; while the community mourns, investigators analyze bloody footprints to determine which path leads to the truth.

As investigators zero in on the Wagners, the family starts to feel the heat and begin undercutting each other; a message from Hanna Rhoden reveals a shocking possible motive for the murders.

At George Wagner's trial, stunning testimony exposes secrets throughout the close-knit community; a motive that caused a family of eight to be murdered in four locations in one night is revealed.

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.

Three fingerprints on a window screen are enough for a print examiner to uncover the work of a serial killer.

With a long list of suspects, forensic experts agree on one thing in this brutal murder: the killer knew his victim.

The only lead to finding a serial killer on the loose is a bloody fingerprint on the body of a victim.

Tests reveal the race, eye color and hair color of the person responsible for killing two young women on Halloween night.

A convicted arsonist claims his innocence and with no lawyer, no money and only a fifth-grade education, sets out to prove it.

A canine behaviorist uses the family dogs, who are the only witnesses, to find the murderer of their owner.

Investigators see through a killer trying to cover his tracks by staging the crime scene to learn what really happened.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

In 1984 police failed to convict the murderer of a college student; new technology may finally help the police to catch her killer.

Police investigate a young woman found murdered two weeks after reporting a road rage incident; evidence leads not to the aggressive driver, but one of their own.

When a single mother is murdered, her brother vows to find the person responsible for the death of his sister, even if it takes more than 30 years.

A husband and wife get shot and their 16-year-old daughter manages to escape, but investigators suspect she may be involved in the murder.

After 10 years, a witness decides to do the right thing about the rape and murder of a young hairdresser.

Police investigate the possibility of a hate crime when two women go missing and are later found murdered.

A woman's sudden death in a Detroit hotel unravels a dark web of secrets, lies and deadly coincidences that hint at something far more sinister.

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.

A pilot flees following a plane crash, becomes a fugitive and lives a double life for decades.

A pilot flees following a plane crash, becomes a fugitive and lives a double life for decades.

Pamela Smart's husband is found murdered; police investigate and discover that Smart is keeping a big secret.