Josh Mankiewicz recalls the story of a detective who makes it her mission to find dozens of women who vanished on the streets of Albuquerque, N.M.

A car belonging to a missing man erupts in a blaze, leading to clues regarding his whereabouts.

It was called the trial of the century and, decades after the polarizing case, questions remain; hear answers and insights through interviews done over the years, rare footage and revealing conversations with key players who offer new details.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; Dennis Murphy takes a fresh look at the secret Tina kept and at the demon who forced her loved ones to make an agonizing decision.

A dancer is murdered in her Virginia home; after interviewing a series of suspects, detectives realize the case is much more complicated than previously thought.

When a small-town Alabama resident is murdered, rumors involving a local pastor begin to swirl.

Dennis Murphy looks back at the story of a determined young woman whose decadeslong search for answers in her mother's mysterious death leads to a dramatic courtroom decision.

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.

Kelsey Berreth vanishes after she was last seen grocery shopping on Thanksgiving; the case makes national headlines, but the secret behind Kelsey's disappearance is lurking much closer to home.

Investigators track down a suspect in the disappearance of a celebrity dog trainer; Keith Morrison reflects on the fractured love story at the center of the mystery.

Craig and Laura Rideout appear happy but after they separate, an ugly secret is revealed and one of them will soon be dead; clues point to four possible killers and leave investigators wondering if this murder is all in the family.

A wife calls 911 to report her husband has been shot on a country road in Texas; what she tells investigators next makes this case memorable for Josh Mankiewicz.

Frank Rodriguez, a Navy veteran who dedicated his life to helping needy children, is mysteriously murdered, and investigators need to figure out how he died to catch his killer.

Andrea Canning looks back on the case of a fitness tracker who helps detectives solve the mystery of a young woman's death in Wisconsin; Andrea confronts the killer in a tense interview.

When 18-year-old Anjelica AJ Hadsell disappears, the investigation into her inner circle reveals a sinister betrayal.

When Nichole Payne and her son Taylor are found dead in their home, investigators wonder if this is a murder-suicide or if someone wants it to look that way. The mystery takes nearly a decade to unravel.

When a star athlete at an Ivy League university goes on trial for murder, sparks fly in the courtroom; the trial ends with a stunning decision that Dennis Murphy will never forget, but the surprises in the case are just beginning.

When 19-year-old Anton Black dies while being taken into police custody, the community seeks justice; a yearlong investigation looks at missed warning signs and the officer at the center of the case.

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

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

After shedding hundreds of pounds, a popular kindergarten teacher goes missing; investigators find a link between her weight loss and her disappearance.

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.

Chilling confessions from a vicious slasher detail only some of his 100+ victims; when he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

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.

In the '90s, aderanged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women; when a would-be victim describes the perp to police, the race is on to catch the murderous john before he strikes again.

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.

Five corpses are found on the Florida hog trails; the investigation stalls until two men narrowly escape the perp's clutches; years later, eight more bodies are found in nearby woods, leaving police to wonder if it's the same evil killer.

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.

Multiple unidentified bodies are found inside barrels in a New Hampshire forest; decades later, a murder 3,000 miles away reveals their connection to a serial predator who targets women and children, and changes his identity after every violent kill.

A rescue mission of an abducted woman turns macabre when two dead women are found in the house; during the interrogation, the killer reveals the location of more bodies; his half sister discusses a dysfunctional childhood that shapes a serial killer.

When the bodies of 12 Black women surface in Missouri and Illinois, the serial killer taunts authorities by sending a cryptic letter to the local paper; as disturbing video evidence emerges, the scope of his crimes is uncovered.

A Canadian nurse walks into a rehabilitation center and confesses to murdering several of her patients; her childhood best friend reveals their lifelong common bond and the terrifying confession she made to him.

An elderly woman's death leads to shocking revelations about her daughter's double life.

After getting away with murder for over three decades, one of the FBI's most wanted shocks investigators when he readily admits to five murders; his son discloses a family life on the run and his attempts to step out of an evil father's shadow.

A family is led to troubled waters as they search for justice.

East Cleveland is shattered when the bodies of 11 murdered women are found in a house of horrors; as the crimes become public, the killer's sister faces death threats and reminders of a childhood spent with a young man turned monster.

A family's suspicion leads them to the truth about a father's disappearance.

Josh Mankiewicz recalls the story of a detective who makes it her mission to find dozens of women who vanished on the streets of Albuquerque, N.M.

A pretty blonde survives the attack that kills her husband.

A devout mother exposes the problems in her marriage and her mind.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; Dennis Murphy takes a fresh look at the secret Tina kept and at the demon who forced her loved ones to make an agonizing decision.

Best friends band together after a husband's death.

When a beautiful woman's much older husband disappears under mysterious circumstances, police suspect that more than just a story has been cooked up.

When a small-town Alabama resident is murdered, rumors involving a local pastor begin to swirl.

A determined detective befriends a Wisconsin woman to solve her boyfriend's suspicious disappearance.

Dennis Murphy looks back at the story of a determined young woman whose decadeslong search for answers in her mother's mysterious death leads to a dramatic courtroom decision.

When a young mother of 16-year-old twins is found dead, investigators must dig deep into the family's complicated relationship.

After former police officer is executed in his own home, police rely on his wife's testimony to bring the murderer to justice.

Investigators track down a suspect in the disappearance of a celebrity dog trainer; Keith Morrison reflects on the fractured love story at the center of the mystery.

The police determine if a marriage that ended in flames was an accident or an act of revenge.

When a man goes missing, the search leads police to his girlfriend and a host of secrets about their past.

A wife calls 911 to report her husband has been shot on a country road in Texas; what she tells investigators next makes this case memorable for Josh Mankiewicz.

A young woman's reconnection with a childhood crush seems like a fairy tale story in the making, but her newfound happiness may be destroyed by questions about a missing man.

Andrea Canning looks back on the case of a fitness tracker who helps detectives solve the mystery of a young woman's death in Wisconsin; Andrea confronts the killer in a tense interview.

The case of a farmer's murder goes cold as speculation mounts about his wife's secret life and the role of a con man.

Diving inside the mind of New York's most prolific serial killer, Joel Rifkin; through never-before-heard interviews from Attica Correctional Facility, Joel Rifkin reveals exclusive insights into the mind of a monster.

When a star athlete at an Ivy League university goes on trial for murder, sparks fly in the courtroom; the trial ends with a stunning decision that Dennis Murphy will never forget, but the surprises in the case are just beginning.

A pair of double homicides in Nebraska, five years apart, lead police to fear a serial killer may be on the loose.

A pair of double homicides in Nebraska, five years apart, leads police to fear a serial killer may be on the loose.

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

Chilling confessions from a vicious slasher detail only some of his 100+ victims; when he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

In Pembroke Pines, Fla., a rookie detective reopens a 15-year-old case about the disappearance of young father David Jackson.

In the '90s, aderanged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women; when a would-be victim describes the perp to police, the race is on to catch the murderous john before he strikes again.

Investigators are suspicious when a wealthy former radio DJ mysteriously disappears from his yacht in the Pacific Ocean.

Five corpses are found on the Florida hog trails; the investigation stalls until two men narrowly escape the perp's clutches; years later, eight more bodies are found in nearby woods, leaving police to wonder if it's the same evil killer.

The investigation into a newlywed's murder starts with a widow; ends with a possible serial killer.

Multiple unidentified bodies are found inside barrels in a New Hampshire forest; decades later, a murder 3,000 miles away reveals their connection to a serial predator who targets women and children, and changes his identity after every violent kill.

A 40-year-old Minnesota woman is shot to death in her bed while her husband and teenage daughter are home, leaving investigators to wonder who would want her dead.

When the bodies of 12 Black women surface in Missouri and Illinois, the serial killer taunts authorities by sending a cryptic letter to the local paper; as disturbing video evidence emerges, the scope of his crimes is uncovered.

An elderly woman's death leads to shocking revelations about her daughter's double life.

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.

A family is led to troubled waters as they search for justice.

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.

A family's suspicion leads them to the truth about a father's disappearance.

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

A pretty blonde survives the attack that kills her husband.

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

A devout mother exposes the problems in her marriage and her mind.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.

Best friends band together after a husband's death.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

Kelly and Steve team up with the Anderson County Sheriff's Office to solve the horrific quadruple homicide of a family on Halloween; their investigation reveals a family feud, a trail of stolen cash, and a bloody shoe print left by the killer.

When a beautiful woman's much older husband disappears under mysterious circumstances, police suspect that more than just a story has been cooked up.

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

When a young mother of 16-year-old twins is found dead, investigators must dig deep into the family's complicated relationship.

Kelly and Steve join the Searcy Police Department to untangle the mystery of a popular hairstylist, murdered on the night of her thirtieth birthday; is it an old flame, a new boyfriend or someone else entirely?

After former police officer is executed in his own home, police rely on his wife's testimony to bring the murderer to justice.

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.

The police determine if a marriage that ended in flames was an accident or an act of revenge.

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

When a man goes missing, the search leads police to his girlfriend and a host of secrets about their past.

A young woman's reconnection with a childhood crush seems like a fairy tale story in the making, but her newfound happiness may be destroyed by questions about a missing man.

Kelly and Steve join the Searcy Police Department to untangle the mystery of a popular hairstylist, murdered on the night of her thirtieth birthday; is it an old flame, a new boyfriend or someone else entirely?

The case of a farmer's murder goes cold as speculation mounts about his wife's secret life and the role of a con man.

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.

Diving inside the mind of New York's most prolific serial killer, Joel Rifkin; through never-before-heard interviews from Attica Correctional Facility, Joel Rifkin reveals exclusive insights into the mind of a monster.

New revelations and never-before-seen interviews shed light on the grisly and twisted case of notorious serial killer Jeffrey Dahmer.

The investigation into the death of a woman whose remains were found in her Frisco, Texas, garage leads detectives to a series of suspects with connections to the victim's complicated and secretive life.

The investigation into the death of a woman whose remains were found in her Frisco, Texas, garage leads detectives to a series of suspects with connections to the victim's complicated and secretive life.

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

In Pembroke Pines, Fla., a rookie detective reopens a 15-year-old case about the disappearance of young father David Jackson.

Investigators are suspicious when a wealthy former radio DJ mysteriously disappears from his yacht in the Pacific Ocean.

A remorseful Pandora returns; her son Cody Henderson speaks out, revealing why he took part in a crime that landed him in prison for life and how he feels about the mother who turned on him.

The investigation into a newlywed's murder starts with a widow; ends with a possible serial killer.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

A 40-year-old Minnesota woman is shot to death in her bed while her husband and teenage daughter are home, leaving investigators to wonder who would want her dead.

When a string of elderly people are brutally murdered in their homes along the Mississippi River, a Task Force is formed to hunt down a serial killer before they can strike again.

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.

When a schoolteacher is gunned down in public, a known felon's DNA and phone records link him to the crime; however, after investigators arrest the man, they discover the real killer might actually be someone else entirely.

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.

A beloved member of the local community is brutally murdered with part of his body apparently taken as a souvenir by the killer; detectives try to make sense of this horrifying crime despite conflicting stories and a possible false confession.

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.

After a hard working Virginia couple is brutally murdered on the eve of their anniversary, the ensuing investigation goes cold until detectives find the most unlikely of suspects.

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.

Investigators speak for the first time on one of the most baffling cases they've encountered, exposing the truth about what happened to Shanann Watts and her two daughters at the hands of a seemingly devoted husband and father, Chris Watts.

The team helps the Abilene Police Department investigate the heartbreaking double homicide of a devoted mother and her young daughter strangled in their home; DNA evidence left at the scene might help identify their killer.

Kelly and Steve join the Kankakee Police Department to help a woman who just missed seeing her mother's killer at their front door when she was 11 years old; decades later, efforts are made to recall any clues to help crack the case.

After authorities finally identify the prolific Green River Killer, it becomes a cat-and-mouse game as they must get inside his mind to get him to lead them to the remains of other missing women.

Kelly and Steve team up with the Anderson County Sheriff's Office to solve the horrific quadruple homicide of a family on Halloween; their investigation reveals a family feud, a trail of stolen cash, and a bloody shoe print left by the killer.

The "Cold Justice" team and the Anderson County Sheriff's Office continue their investigation into the quadruple homicide of a family of four in an attempt to finally give answers and justice to their grieving family and community.

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.

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

Kelly and Steve join the Searcy Police Department to untangle the mystery of a popular hairstylist, murdered on the night of her thirtieth birthday; is it an old flame, a new boyfriend or someone else entirely?

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

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.

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.

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

Kelly and Steve join the Searcy Police Department to untangle the mystery of a popular hairstylist, murdered on the night of her thirtieth birthday; is it an old flame, a new boyfriend or someone else entirely?

Retired Detective Ken Mains teams up with an inmate on death row to expose the secrets of unknown serial killer Joseph Naso: while bringing closure to a victim's family, Ken uncovers that Naso likely killed many more women than police ever thought.

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.

New revelations and never-before-seen interviews shed light on the grisly and twisted case of notorious serial killer Jeffrey Dahmer.

Retired detective Ken Mains and inmate Bill Noguera uncover new details about serial killer Joseph Naso, who posed as a pro baseball team's photographer to hunt women and may have gone on a killing spree in Sin City.

Bill Noguera gets a written confession from serial killer Joseph Naso, cracking open another cold case from his list of 10; Detective Mains uncovers more potential victims from an infamous case in New York.

Police initially suspect natural causes as they investigate a man's death, until they learn about an unconventional love triangle, which points the investigation in a new direction.

Police initially suspect natural causes as they investigate a man's death, until they learn about an unconventional love triangle, which points the investigation in a new direction.

Family man Jack Jessee is murdered in his home, but the case goes cold until a dogged detective unravels a conspiracy and pins down the perpetrators.

Months after a woman and her husband come down with the same mysterious illness, the woman dies after experiencing the same symptoms; old recordings reveal the twisted truth about her demise.

Detectives find a message written in blood during a murder investigation.

A remorseful Pandora returns; her son Cody Henderson speaks out, revealing why he took part in a crime that landed him in prison for life and how he feels about the mother who turned on him.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

When a string of elderly people are brutally murdered in their homes along the Mississippi River, a Task Force is formed to hunt down a serial killer before they can strike again.

When a schoolteacher is gunned down in public, a known felon's DNA and phone records link him to the crime; however, after investigators arrest the man, they discover the real killer might actually be someone else entirely.

A beloved member of the local community is brutally murdered with part of his body apparently taken as a souvenir by the killer; detectives try to make sense of this horrifying crime despite conflicting stories and a possible false confession.

After a hard working Virginia couple is brutally murdered on the eve of their anniversary, the ensuing investigation goes cold until detectives find the most unlikely of suspects.

Investigators speak for the first time on one of the most baffling cases they've encountered, exposing the truth about what happened to Shanann Watts and her two daughters at the hands of a seemingly devoted husband and father, Chris Watts.

After authorities finally identify the prolific Green River Killer, it becomes a cat-and-mouse game as they must get inside his mind to get him to lead them to the remains of other missing women.

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

The 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.

Retired Detective Ken Mains teams up with an inmate on death row to expose the secrets of unknown serial killer Joseph Naso: while bringing closure to a victim's family, Ken uncovers that Naso likely killed many more women than police ever thought.

Retired detective Ken Mains and inmate Bill Noguera uncover new details about serial killer Joseph Naso, who posed as a pro baseball team's photographer to hunt women and may have gone on a killing spree in Sin City.

Bill Noguera gets a written confession from serial killer Joseph Naso, cracking open another cold case from his list of 10; Detective Mains uncovers more potential victims from an infamous case in New York.

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.

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.

A cold-case investigator helps police determine what happened to a missing woman.