A similar abduction in New Mexico helps crack the case of a 19-year-old missing college student in Oregon.

Police link a filmmaker who is obsessed with the show "Dexter" with a man's disappearance.

Michael Peterson, who was granted a new trial after the 2003 conviction in the murder of his wife was overturned, discusses the case and his decision to enter an Alford plea.

Terrorism is suspected when a woman's truck explodes outside of the daycare center where she works.

A man uses a dating site to meet and murder a college student.

Detectives connect a series of seemingly random crimes to crack the case of a missing young man.

When a 23-year-old woman goes missing from a shopping mall in Plano, Texas, her family searches for her, and the police seek out who is responsible for her disappearance.

After a successful young doctor collapses, a blood test reveals cyanide poisoning, resulting in a criminal investigation.

The investigation into the death of Spokane, Wash., businessman exposes a web of malevolence extending from the Pacific Northwest to a North Dakota oil field.

Brittany Stork's decades-long quest to find out more about her mother's mysterious death leads to a dramatic courtroom decision; the man at the center of the case tells his side of the story.

A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.

When Nichole Payne and her son Taylor are found dead in their home, it takes nearly a decade to unravel what happened; for the first time on television, Nichole's children share what they saw the day their mother and brother were murdered.

Detectives connect a series of seemingly random crimes to crack the case of a missing young man.

When a 23-year-old woman goes missing from a shopping mall in Plano, Texas, her family searches for her, and the police seek out who is responsible for her disappearance.

After a successful young doctor collapses, a blood test reveals cyanide poisoning, resulting in a criminal investigation.

The investigation into the death of Spokane, Wash., businessman exposes a web of malevolence extending from the Pacific Northwest to a North Dakota oil field.

Brittany Stork's decades-long quest to find out more about her mother's mysterious death leads to a dramatic courtroom decision; the man at the center of the case tells his side of the story.

A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.

When Nichole Payne and her son Taylor are found dead in their home, it takes nearly a decade to unravel what happened; for the first time on television, Nichole's children share what they saw the day their mother and brother were murdered.

Detectives connect a series of seemingly random crimes to crack the case of a missing young man.

When a 23-year-old woman goes missing from a shopping mall in Plano, Texas, her family searches for her, and the police seek out who is responsible for her disappearance.

After a successful young doctor collapses, a blood test reveals cyanide poisoning, resulting in a criminal investigation.

The investigation into the death of Spokane, Wash., businessman exposes a web of malevolence extending from the Pacific Northwest to a North Dakota oil field.

Brittany Stork's decades-long quest to find out more about her mother's mysterious death leads to a dramatic courtroom decision; the man at the center of the case tells his side of the story.

A young art student from Texas is found murdered in her bed with no sign of forced entry, indicating that she knew her killer.

When Nichole Payne and her son Taylor are found dead in their home, it takes nearly a decade to unravel what happened; for the first time on television, Nichole's children share what they saw the day their mother and brother were murdered.

Over the course of a year, violent crimes are committed against two women from the same church; evidence is revealed that suggests the two cases are not just coincidences.

A hairdresser-turned-detective uncovers the truth behind the murder of a teenage girl at a scenic spot on a Utah river.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

Intruders break into a family's home.

A deadly high-speed chase in Montana leads "Dateline" on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

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.

Over the course of a year, violent crimes are committed against two women from the same church; evidence is revealed that suggests the two cases are not just coincidences.

A hairdresser-turned-detective uncovers the truth behind the murder of a teenage girl at a scenic spot on a Utah river.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

Intruders break into a family's home.

A deadly high-speed chase in Montana leads "Dateline" on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

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.

Over the course of a year, violent crimes are committed against two women from the same church; evidence is revealed that suggests the two cases are not just coincidences.

A hairdresser-turned-detective uncovers the truth behind the murder of a teenage girl at a scenic spot on a Utah river.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

Intruders break into a family's home.

A deadly high-speed chase in Montana leads "Dateline" on a search through 50 years of history to unravel the mystery of how one man turned into a monster and committed one of the state's most notorious crimes.

The murder of a young businessman in Old San Juan, Puerto Rico, marks the start of a 15-year-long hunt to find the killer.

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.

Two years after the disappearance of his wife, Josh Powell kills his two sons and himself; Josh's last in-depth TV interview; a 911 dispatcher discusses the emergency call placed by a social worker.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories.

A woman's disappearance tears her young children apart; a sting operation catches an unlikely villain.

Detectives in Washington D.C. discover a puzzling connection between two women who disappeared two decades apart; an investigation reveals a sinister secret hidden along one of the busiest stretches of interstate in the country.

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

San Diego detectives investigate the deaths of a young woman and her 10-month-old child.

A Tennessee resident is murdered in her bedroom; investigators have little evidence and struggle to find answers.

Two years after the disappearance of his wife, Josh Powell kills his two sons and himself; Josh's last in-depth TV interview; a 911 dispatcher discusses the emergency call placed by a social worker.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories.

A woman's disappearance tears her young children apart; a sting operation catches an unlikely villain.

Detectives in Washington D.C. discover a puzzling connection between two women who disappeared two decades apart; an investigation reveals a sinister secret hidden along one of the busiest stretches of interstate in the country.

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

San Diego detectives investigate the deaths of a young woman and her 10-month-old child.

A Tennessee resident is murdered in her bedroom; investigators have little evidence and struggle to find answers.

Two years after the disappearance of his wife, Josh Powell kills his two sons and himself; Josh's last in-depth TV interview; a 911 dispatcher discusses the emergency call placed by a social worker.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories.

A woman's disappearance tears her young children apart; a sting operation catches an unlikely villain.

Detectives in Washington D.C. discover a puzzling connection between two women who disappeared two decades apart; an investigation reveals a sinister secret hidden along one of the busiest stretches of interstate in the country.

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

San Diego detectives investigate the deaths of a young woman and her 10-month-old child.

A Tennessee resident is murdered in her bedroom; investigators have little evidence and struggle to find answers.

A woman finds her way back to her family after being kidnapped 30 years earlier.

A charismatic pastor's dark secrets come to light after his wife's mysterious death; the case shattered a congregation and exposed the cost of their unshakable trust.

A man claims his young wife killed herself after she is found dead in her burning home.

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

When a young woman is found nearly murdered in her apartment, officials wonder if it is connected to the disappearance of a young woman in nearby Denver weeks earlier.

When Tom Foley becomes the top suspect in his wife's murder, he spends the next two years trying to prove his innocence.

When a San Antonio man shoots his wife, he claims to have shot her after mistaking her for an intruder.

A woman finds her way back to her family after being kidnapped 30 years earlier.

A charismatic pastor's dark secrets come to light after his wife's mysterious death; the case shattered a congregation and exposed the cost of their unshakable trust.

A man claims his young wife killed herself after she is found dead in her burning home.

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

When a young woman is found nearly murdered in her apartment, officials wonder if it is connected to the disappearance of a young woman in nearby Denver weeks earlier.

When Tom Foley becomes the top suspect in his wife's murder, he spends the next two years trying to prove his innocence.

When a San Antonio man shoots his wife, he claims to have shot her after mistaking her for an intruder.

A woman finds her way back to her family after being kidnapped 30 years earlier.

A charismatic pastor's dark secrets come to light after his wife's mysterious death; the case shattered a congregation and exposed the cost of their unshakable trust.

A man claims his young wife killed herself after she is found dead in her burning home.

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

When a young woman is found nearly murdered in her apartment, officials wonder if it is connected to the disappearance of a young woman in nearby Denver weeks earlier.

When Tom Foley becomes the top suspect in his wife's murder, he spends the next two years trying to prove his innocence.

When a San Antonio man shoots his wife, he claims to have shot her after mistaking her for an intruder.

A woman disappears while on her morning jog.

The investigation into the disappearance of a young mother in the Pacific Northwest leads authorities to an estranged husband, an ex-boyfriend and a suspicious neighbor.

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.

The children of an Oklahoma pastor survive the robbery that took their parents' lives and observe the trials of those accused of committing the crime.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.

The investigation into the death of a college student leads authorities to her theater group and a new crime that exposes the truth.

Police investigate whether the shooting of a young woman in Utah was an accident or something more sinister.

A woman disappears while on her morning jog.

The investigation into the disappearance of a young mother in the Pacific Northwest leads authorities to an estranged husband, an ex-boyfriend and a suspicious neighbor.

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.

The children of an Oklahoma pastor survive the robbery that took their parents' lives and observe the trials of those accused of committing the crime.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.

The investigation into the death of a college student leads authorities to her theater group and a new crime that exposes the truth.

Police investigate whether the shooting of a young woman in Utah was an accident or something more sinister.

A woman disappears while on her morning jog.

The investigation into the disappearance of a young mother in the Pacific Northwest leads authorities to an estranged husband, an ex-boyfriend and a suspicious neighbor.

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.

The children of an Oklahoma pastor survive the robbery that took their parents' lives and observe the trials of those accused of committing the crime.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.

The investigation into the death of a college student leads authorities to her theater group and a new crime that exposes the truth.

Police investigate whether the shooting of a young woman in Utah was an accident or something more sinister.

Kidnappers target a 24-year-old American woman living in South America.

A man dies in a shooting incident after tempers flare in a confrontation in Montana's Glacier National Park.

The disappearance of two teenagers brings together two families in a common journey for justice; what California is doing to prevent a similar tragedy.

The disappearance of a 20-year-old honors student causes her family to fear the worst; decades later, the mystery is solved.

When a California nursing student disappears during her hospital shift, her family works to locate her.

When one woman breaks off her relationship with a boyfriend she says abused and stalked her, he moves on to something even worse.

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.

Kidnappers target a 24-year-old American woman living in South America.

A man dies in a shooting incident after tempers flare in a confrontation in Montana's Glacier National Park.

The disappearance of two teenagers brings together two families in a common journey for justice; what California is doing to prevent a similar tragedy.

The disappearance of a 20-year-old honors student causes her family to fear the worst; decades later, the mystery is solved.

When a California nursing student disappears during her hospital shift, her family works to locate her.

When one woman breaks off her relationship with a boyfriend she says abused and stalked her, he moves on to something even worse.

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.

Kidnappers target a 24-year-old American woman living in South America.

A man dies in a shooting incident after tempers flare in a confrontation in Montana's Glacier National Park.

The disappearance of two teenagers brings together two families in a common journey for justice; what California is doing to prevent a similar tragedy.

The disappearance of a 20-year-old honors student causes her family to fear the worst; decades later, the mystery is solved.

When a California nursing student disappears during her hospital shift, her family works to locate her.

When one woman breaks off her relationship with a boyfriend she says abused and stalked her, he moves on to something even worse.

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.

A teen driver discusses what happened the night she was involved in a car crash that left a pregnant woman and her son dead; authorities try to determine if the incident was an accident or intentional.

The investigation into the murder of a pregnant woman leads to a former professional football player and several women associated with him.

When a California housewife is murdered in broad daylight, the suspected killer claims it was a burglary gone awry.

When a Pennsylvania man who was convinced his messy divorce put a target on his back is found stabbed to death, his friends and family realize he was right all along in predicting his own gruesome murder.

A look back at the 1997 murder of fashion designer Gianni Versace, including interviews with his long-time partner Antonio D'Amico, model Beverly Johnson, fashion journalist Hal Rubenstein, author Maureen Orth and more.

The security cameras at the home of a wife and mother of three's home may hold the key to solving the mystery of her disappearance.

When the death of a 59-year-old father is found to be unrelated to his ongoing health issues, police begin an investigation and question some of his family members.

A teen driver discusses what happened the night she was involved in a car crash that left a pregnant woman and her son dead; authorities try to determine if the incident was an accident or intentional.

The investigation into the murder of a pregnant woman leads to a former professional football player and several women associated with him.

When a California housewife is murdered in broad daylight, the suspected killer claims it was a burglary gone awry.

When a Pennsylvania man who was convinced his messy divorce put a target on his back is found stabbed to death, his friends and family realize he was right all along in predicting his own gruesome murder.

A look back at the 1997 murder of fashion designer Gianni Versace, including interviews with his long-time partner Antonio D'Amico, model Beverly Johnson, fashion journalist Hal Rubenstein, author Maureen Orth and more.

The security cameras at the home of a wife and mother of three's home may hold the key to solving the mystery of her disappearance.

When the death of a 59-year-old father is found to be unrelated to his ongoing health issues, police begin an investigation and question some of his family members.

A teen driver discusses what happened the night she was involved in a car crash that left a pregnant woman and her son dead; authorities try to determine if the incident was an accident or intentional.

The investigation into the murder of a pregnant woman leads to a former professional football player and several women associated with him.

When a California housewife is murdered in broad daylight, the suspected killer claims it was a burglary gone awry.

When a Pennsylvania man who was convinced his messy divorce put a target on his back is found stabbed to death, his friends and family realize he was right all along in predicting his own gruesome murder.

A look back at the 1997 murder of fashion designer Gianni Versace, including interviews with his long-time partner Antonio D'Amico, model Beverly Johnson, fashion journalist Hal Rubenstein, author Maureen Orth and more.

The security cameras at the home of a wife and mother of three's home may hold the key to solving the mystery of her disappearance.

When the death of a 59-year-old father is found to be unrelated to his ongoing health issues, police begin an investigation and question some of his family members.

After a sudden marriage creates tension between two families, a murder exposes secrets, lies and a long-buried mystery.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

Interviews with former journalist Amanda Lindhout and the undercover agent who spearheaded the international manhunt for the individual responsible for her 2008 kidnapping and torture in Somalia.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

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 Dr. Teresa Sievers is found murdered in her kitchen, detectives struggle to find any leads until an unexpected tip changes everything; the woman who helped investigators speaks out.

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

After a sudden marriage creates tension between two families, a murder exposes secrets, lies and a long-buried mystery.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

Interviews with former journalist Amanda Lindhout and the undercover agent who spearheaded the international manhunt for the individual responsible for her 2008 kidnapping and torture in Somalia.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

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 Dr. Teresa Sievers is found murdered in her kitchen, detectives struggle to find any leads until an unexpected tip changes everything; the woman who helped investigators speaks out.

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

After a sudden marriage creates tension between two families, a murder exposes secrets, lies and a long-buried mystery.

Co-lead investigator in the Steven Avery case Tom Fassbender discusses the case and allegations investigators coerced Avery's nephew, Brendan Dassey, into making a false confession.

Interviews with former journalist Amanda Lindhout and the undercover agent who spearheaded the international manhunt for the individual responsible for her 2008 kidnapping and torture in Somalia.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

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 Dr. Teresa Sievers is found murdered in her kitchen, detectives struggle to find any leads until an unexpected tip changes everything; the woman who helped investigators speaks out.

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

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

The murder of a wealthy hotel heir ignites a feud between his wife and stepdaughter.

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.

The family members of murdered California entrepreneur Chris Smith speak out; interviews with investigators, Smith's former colleague, and prosecutor Matt Murphy.

When a pathologist is found murdered in his home, the investigation reveals simmering jealousies and a love triangle.

The question of a surgeon's whereabouts remains unanswered for five years after he disappears while on vacation in the Greek Islands with his wife, leaving behind financial ruin and mounting malpractice suits from patients in the U.S.

Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

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

The murder of a wealthy hotel heir ignites a feud between his wife and stepdaughter.

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.

The family members of murdered California entrepreneur Chris Smith speak out; interviews with investigators, Smith's former colleague, and prosecutor Matt Murphy.

When a pathologist is found murdered in his home, the investigation reveals simmering jealousies and a love triangle.

The question of a surgeon's whereabouts remains unanswered for five years after he disappears while on vacation in the Greek Islands with his wife, leaving behind financial ruin and mounting malpractice suits from patients in the U.S.

Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

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

The murder of a wealthy hotel heir ignites a feud between his wife and stepdaughter.

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.

The family members of murdered California entrepreneur Chris Smith speak out; interviews with investigators, Smith's former colleague, and prosecutor Matt Murphy.

When a pathologist is found murdered in his home, the investigation reveals simmering jealousies and a love triangle.

The question of a surgeon's whereabouts remains unanswered for five years after he disappears while on vacation in the Greek Islands with his wife, leaving behind financial ruin and mounting malpractice suits from patients in the U.S.

Two Tulsa brothers fight for more than 20 years to prove their innocence after they were wrongfully convicted for separate murders.

Investigators find an unlikely suspect in a woman's death; actor Ricky Gervais talks about his life, fame and hosting the Golden Globe Awards.

A teenager disappears from her friend's house before being found dead.

Authorities become suspicious when a pastor loses a second wife in an accident.

When a determined investigator works with a prosecutor in hope of solving a 20-year-old murder case, a dark secret is uncovered.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

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.

A former marine who once was the hero for a woman in an abusive marriage may have let his desire to help go too far.

Investigators find an unlikely suspect in a woman's death; actor Ricky Gervais talks about his life, fame and hosting the Golden Globe Awards.

A teenager disappears from her friend's house before being found dead.

Authorities become suspicious when a pastor loses a second wife in an accident.

When a determined investigator works with a prosecutor in hope of solving a 20-year-old murder case, a dark secret is uncovered.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.