A model with a checkered past goes undercover to reveal the truth about a cold case involving a romantic getaway on a boat that ended with a woman being lost at sea.

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Investigative genetic genealogy solves the 1998 murder of a mother killed in front of her toddler.

Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.

Advances in forensic science shine a light on a case that went cold for decades, revealing the name of a serial killer who murdered two women in the late 1980s in Orange County, Calif.

In 1990, a Mississippi woman is kidnapped and raped at knifepoint; the case goes cold for decades until a DNA match from an unrelated crime identifies the perpetrator.

Advances in forensic science shine a light on a case that went cold for decades, revealing the name of a serial killer who murdered two women in the late 1980s in Orange County, Calif.

In 1990, a Mississippi woman is kidnapped and raped at knifepoint; the case goes cold for decades until a DNA match from an unrelated crime identifies the perpetrator.

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The murder of former NBA star and hometown hero Lorenzen Wright sends shockwaves through the city of Memphis, Tenn.; insiders speak out about new developments in the lengthy search for justice.

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

A college student is found murdered in a residential neighborhood; as police search for the truth, they are stunned to learn that one of their own might be involved.

The investigation into the disappearance of a Marine's 19-year-old wife reveals a secret love triangle and multiple suspects.

The latest in the case of a missing young Oregon woman whose disappearance led to an intense manhunt after a suspect embarked on a two-state crime spree.

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

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

Born to Kill; Carnies; Children's Past Lives; Update: I.D. Swap; Sadd Fugitive; Nine Lives.

Picture Taking Fugitive; John Burns; Deputy Death; Honky Tonk Woman; Update: Sharon's Search; Coma Healer.

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

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Advances in forensic science shine a light on a case that went cold for decades, revealing the name of a serial killer who murdered two women in the late 1980s in Orange County, Calif.

In 1990, a Mississippi woman is kidnapped and raped at knifepoint; the case goes cold for decades until a DNA match from an unrelated crime identifies the perpetrator.

In 1972, a young woman is found covered in blood by the road in Snohomish County, WA.

In 1980, an Ohio man finds his wife lying in a pool of blood after she had been stabbed by an unknown killer.

In 1972, a young woman is found covered in blood by the road in Snohomish County, WA.

In 1980, an Ohio man finds his wife lying in a pool of blood after she had been stabbed by an unknown killer.

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

Investigators are determined to find out if the two murder cases are connected.

A woman walks into her home to find her daughter covered in blood; a single drop of blood is the key to finding the attacker.

When a woman is abducted during her evening shift at a gift shop, her family keeps the case in the public eye for decades, until investigators finally solve the mystery.

A man from Iowa is shot to death while sleeping in bed next to his fiancee; coincidences and quick thinking lead to surprising information regarding the killer's motive.

Insight into Border Line Murder; Sleepwalking; Searcher's Son; Frightened Family; Dennis Keith Smith.

Bonnie and Clyde 2001; Update: Florida Crime Spree; Storm in Hell; Heather Tallchief; Film Student's Death; Bloodhounds.

Massachusetts Marine; Yeti; Terrorized Teen; Biker and the Vet; Killer Boyfriend.

Texas Crime Spree; Inside Frontera; Deadly Doses; The Entity.

Missing on a Cruise; Taunting Bank Robber; DEA Agent Death; Bullock's Deadwood; Up in Smoke; Danny and His Dad.

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In 1972, a young woman is found covered in blood by the road in Snohomish County, WA.

In 1980, an Ohio man finds his wife lying in a pool of blood after she had been stabbed by an unknown killer.

In 1985, when a young nurse is sexually assaulted by an unknown assailant, she turns to law enforcement to catch this sexual predator; despite her horrific ordeal, she never loses hope that her attacker will be caught.

Investigative genetic genealogy unmasks the sexual deviant who raped and killed Christina Castiglione in 1983.

In 1985, when a young nurse is sexually assaulted by an unknown assailant, she turns to law enforcement to catch this sexual predator; despite her horrific ordeal, she never loses hope that her attacker will be caught.

Investigative genetic genealogy unmasks the sexual deviant who raped and killed Christina Castiglione in 1983.

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

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

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.

Mrs. Rogers; Plateau Vision; Update: War of the Depues; Killer Boyfriend; Medford Millions; Looking for Christopher.

Skull Duggery; Lucky School; Deadly Doses; Drug Playboy; Eleven Million Dollar Heist; Fallen Star.

Cases include Dial's Escape; Socorro Close Encounter; Martin Luther King: Part 1 and Part 2; Purvis Confession.

Where's Charlotte?; MP Death: Part 1 and 2; Love on the Run; G.I. Dad; Nazca Lines.

Freshwater Runs Still; Is Ed Dead?; Lake Wales Haunting; Anchors Away; Update: Mental Daze; St. Louis Custody Killer.

Convicted murderer Drew Peterson speaks out about the murder of his third wife and the disappearance of his fourth wife.

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

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.

A man steals millions of dollars by conning numerous women and businesses over 25 years; one woman brings together a group of his victims to hold him accountable and make him face justice.

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In 1985, when a young nurse is sexually assaulted by an unknown assailant, she turns to law enforcement to catch this sexual predator; despite her horrific ordeal, she never loses hope that her attacker will be caught.

Investigative genetic genealogy unmasks the sexual deviant who raped and killed Christina Castiglione in 1983.

The 1972 rape and murder of nine-year-old Debbie Lynn Randall is solved five decades later with the help of forensic science.

Investigators try to solve the case of Sharon Hammack, a woman whose body was wrapped in a blanket is found on the side of a road in Michigan, 1996.

The 1972 rape and murder of nine-year-old Debbie Lynn Randall is solved five decades later with the help of forensic science.

Investigators try to solve the case of Sharon Hammack, a woman whose body was wrapped in a blanket is found on the side of a road in Michigan, 1996.

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Learn what's behind mental decline with age, and how to improve memory, focus and concentration with NeuroQ's Darrin Peterson and Dale Bredesen MD.

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An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

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

A woman's death is initially ruled a suicide, but when a new investigation begins, police begin to suspect murder.

Waag the Dog; Hudson Valley UFO (Parts 1 and 2); Update: Wandering Fisherman; Newlywed Found Dead; Murder 101.

Til Death Do Us Part; Shroud of Turin; Is Borton Back: Part 1 and 2; Burning Bed; G.I. Dad.

Where's Jo?; Mexico UFO; Update: Nudist Fraud; Carlucci; Merchant Student Drowning; Mandy and Punky.

Motorcycle Mom & UD; Update: Ready Teller Robbery; White Bird; Strychnine Death; Missing Mariners.

Slain Sammy; Jumping Off Place; Unicorn's Secret; Update: Bad Chief; Gettysburg Ghosts; Hospital Escape.

A woman is found murdered after her close friend hears her screaming on the phone; the mysterious death of her boyfriend's twin brother leads investigators to a suspect.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

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.

After following Laci Peterson's case for more than 15 years, the show delivers a comprehensive report with rarely-seen interrogation video, new insight from prosecutors, and surprising details from Amber Frey, who helped uncover the truth.

Transform your bath affordably in just one day!

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The 1972 rape and murder of nine-year-old Debbie Lynn Randall is solved five decades later with the help of forensic science.

Investigators try to solve the case of Sharon Hammack, a woman whose body was wrapped in a blanket is found on the side of a road in Michigan, 1996.

When a young woman is out for a run she is brutally attacked and raped by a stranger, police use ground breaking genetic genealogy to identify the perpetrator.

In 2010, Sherry Black is found stabbed to death in her bookstore in Salt Lake City, Utah.

When a young woman is out for a run she is brutally attacked and raped by a stranger, police use ground breaking genetic genealogy to identify the perpetrator.

In 2010, Sherry Black is found stabbed to death in her bookstore in Salt Lake City, Utah.

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

The battle between a wife and a mistress for one man's heart leads to a deadly car chase.

When a father goes missing and his body is found in a field several miles away, the investigation reveals multiple suspects -- including members of his own family.

Dinnertime Bandit; Texas Most Wanted; Elevator Murder; CIA Cover-up; General Wayne Inn; Missing Bird People.

Armored Car Killings; Update: Fumbles Robber; Dahlia/Torso Connection; Tunnel of Cocaine; Black Hope Curse (Parts 1 & 2).

An in-depth look at a series of unsolved mysteries including Casino Cowboy, Update: KC Blast, Road Rage, Australian UFO, San Marino Bones, and Psychic Spy.

D.B. Cooper (Parts 1 & 2); Richard's Rampage; Update: Log Cabin Fraud; Chair of Death; Wood I Lie to You.

An in-depth look at a series of unsolved mysteries including Burnt Evidence, Dark Dante, Skeleton Canyon, Con-Doc, Smitty, and Update: Newlywed Escape.

Mrs. Rogers; Plateau Vision; Update: War of the Depues; Killer Boyfriend; Medford Millions; Looking for Christopher.

Skull Duggery; Lucky School; Deadly Doses; Drug Playboy; Eleven Million Dollar Heist; Fallen Star.

Cases include Dial's Escape; Socorro Close Encounter; Martin Luther King: Part 1 and Part 2; Purvis Confession.

Where's Charlotte?; MP Death: Part 1 and 2; Love on the Run; G.I. Dad; Nazca Lines.

Freshwater Runs Still; Is Ed Dead?; Lake Wales Haunting; Anchors Away; Update: Mental Daze; St. Louis Custody Killer.

Waag the Dog; Hudson Valley UFO (Parts 1 and 2); Update: Wandering Fisherman; Newlywed Found Dead; Murder 101.

Til Death Do Us Part; Shroud of Turin; Is Borton Back: Part 1 and 2; Burning Bed; G.I. Dad.

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When a young woman is out for a run she is brutally attacked and raped by a stranger, police use ground breaking genetic genealogy to identify the perpetrator.

In 2010, Sherry Black is found stabbed to death in her bookstore in Salt Lake City, Utah.

Wisconsin, 1976, 25-year-old David Schuldes and 24-year-old Ellen Matheys are murdered in a park; the case goes cold until 2015 when new DNA science is found.

Police solve the decades-old cold case of Clare Holman through new advancements in DNA technology.

Wisconsin, 1976, 25-year-old David Schuldes and 24-year-old Ellen Matheys are murdered in a park; the case goes cold until 2015 when new DNA science is found.

Police solve the decades-old cold case of Clare Holman through new advancements in DNA technology.

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Save thousands on car repairs.

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

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

When a small-town Alabama resident is murdered in his home, rumors involving a local pastor begin to swirl as the truth ends up turning the community upside down.

An in-depth look at a series of unsolved mysteries including Boston Strangler, Gas Station Video, Interceptions, and Model A Sister.

Explores the cases of Sonny Liston, Thumbs, Belgian UFO, Update: Mickey Thompson, and Down to the Wire.

Murder & Extortion; Casino Disappearance; Suddenly Psychic; Larry's Rampage; Update: Trucker Rapist Escape; Plummer's Booty.

Salem Secrets; Update: Pierre's Amnesia; Florida Crime Spree; Ness; Canadian Camper; Rock of Fortune.

Who Killed Superman?; Satchel Bandit; Ghostbusters; Update: Til Death Do Us Part; Money From Heaven; Hot Jock.

A California woman's two former husbands are mysteriously murdered, nearly 20 years apart.

As detectives investigate a mother of two's sudden disappearance, her friends and family reveal she feared she was being stalked.

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.

A dancer is murdered in her Virginia home.

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Wisconsin, 1976, 25-year-old David Schuldes and 24-year-old Ellen Matheys are murdered in a park; the case goes cold until 2015 when new DNA science is found.

Police solve the decades-old cold case of Clare Holman through new advancements in DNA technology.

19-year-old Janet Stallcup is murdered in 1976; decades later, cutting-edge technology breaks the case open.

A forensic technique finally solves the decades-old mystery of Krisann Baxter's case.

19-year-old Janet Stallcup is murdered in 1976; decades later, cutting-edge technology breaks the case open.

A forensic technique finally solves the decades-old mystery of Krisann Baxter's case.

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Save thousands on car repairs.

Nearly 40 years after a high school senior is found stabbed to death in her car after visiting the mall days before Christmas, investigators identify the killer.

A daughter finds her father, a former FBI agent, murdered at his house; police dig into the man's past and begin to think the key to the mystery might be quite close to home.

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

Bones Knows; Update: Model's Third Notebook; Thrill Killer; Noah's Ark; Bad Friday; Ghosts Go to Court.

Tommy and His Parents; Pet Heroes; Update: Cop Killer Escape; Hell's Angels Fugitive; Death Row Mom (Parts 1 and 2).

Green River Killer + UD; Update: Poison Shake; Matchmaker Ghost; Police Captain's Death; Lenny Dirickson; Dead Ringer + UD.

A look at a series "Unsolved Mysteries" including Reincarnated Submariner, Wanted Weaver, Update: Smitty, Oliver, A Manpanzee and Caruana.

Don's Near Miss; Lost in Jamaica; Dutch Schultz Treasure; Voodoo; Update: Stamper's Rampage; Burned Businessman.

A double homicide in upstate New York leads detectives on a cross-country investigation to piece together a case with a surprising suspect at the center.

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

A couple seems made for each other, but a secret is uncovered, and their passion turns into violence, then an elaborate plot is hatched to get revenge.

Where's Jo?; Mexico UFO; Update: Nudist Fraud; Carlucci; Merchant Student Drowning; Mandy and Punky.

Motorcycle Mom & UD; Update: Ready Teller Robbery; White Bird; Strychnine Death; Missing Mariners.

When long-haul truck driver Lloyd Ford disappears, it doesn't raise many red flags, but two people know where he is and guard the secret for 27 years.

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19-year-old Janet Stallcup is murdered in 1976; decades later, cutting-edge technology breaks the case open.

A forensic technique finally solves the decades-old mystery of Krisann Baxter's case.

Forty years after 20-year-old Krista Martin is murdered in Kansas, genetic genealogy finally provides answers.

In 1991, an intruder sexually assaults a woman in her own home in Chandler, Ariz.; the case goes unsolved for decades until revolutionary science connects the dots.

Forty years after 20-year-old Krista Martin is murdered in Kansas, genetic genealogy finally provides answers.

In 1991, an intruder sexually assaults a woman in her own home in Chandler, Ariz.; the case goes unsolved for decades until revolutionary science connects the dots.

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Discover the Nectar Tri-Comfort Cooling Pillow for the ultimate sleep experience! Adjustable to three firmness levels to provide customized support and cooling all night long. Order NOW to get a second pillow FREE, plus a 30-night home trial!

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A family visit over the holidays ends in tragedy when a man is found dead on the kitchen floor; authorities are faced with twists and turns in the case as new details emerge.

When a woman disappears after an encounter on a train, her family hires detectives to investigate.

After a woman goes missing on Blood Mountain in the Chattahoochee National Forest, authorities suspect the man responsible was re-enacting a horror movie.

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

A community comes together to search for a young woman who goes missing from a Halloween party.

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

A detective comes face to face with a serial killer when she promises to get justice for the mother of a victim whose body turns up at an Anaheim trash facility.

Slain Sammy; Jumping Off Place; Unicorn's Secret; Update: Bad Chief; Gettysburg Ghosts; Hospital Escape.

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.

The FBI gets involved when a Virginia man's wife and son are kidnapped while vacationing in the Philippines, with a terrorist group demanding millions in ransom.

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Forty years after 20-year-old Krista Martin is murdered in Kansas, genetic genealogy finally provides answers.

In 1991, an intruder sexually assaults a woman in her own home in Chandler, Ariz.; the case goes unsolved for decades until revolutionary science connects the dots.

Forensic science catches up with a killer who murdered Mary Catherine Edwards in Beaumont, Texas in 1995.

Can new forensic science identify Cathy Sposito's murderer from an Arizona hiking trail in 1987?

Forensic science catches up with a killer who murdered Mary Catherine Edwards in Beaumont, Texas in 1995.

Can new forensic science identify Cathy Sposito's murderer from an Arizona hiking trail in 1987?

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The Valseca siblings' lives are changed when their father is taken hostage in an orchestrated abduction.

Years after a Montana man is found dead, his son dreads what he'll find when he opens up the box of case files, giving him insight into what really happened.

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.

A romantic Mediterranean cruise intended to rekindle the love between a woman and her ex-husband leads to her vanishing.

After a 15-year-old girl disappears, investigators discover a creek where the local teenagers hang out that may hold the answer to her disappearance.

Bones Knows; Update: Model's Third Notebook; Thrill Killer; Noah's Ark; Bad Friday; Ghosts Go to Court.

Tommy and His Parents; Pet Heroes; Update: Cop Killer Escape; Hell's Angels Fugitive; Death Row Mom (Parts 1 and 2).

Green River Killer + UD; Update: Poison Shake; Matchmaker Ghost; Police Captain's Death; Lenny Dirickson; Dead Ringer + UD.

A look at a series "Unsolved Mysteries" including Reincarnated Submariner, Wanted Weaver, Update: Smitty, Oliver, A Manpanzee and Caruana.

Don's Near Miss; Lost in Jamaica; Dutch Schultz Treasure; Voodoo; Update: Stamper's Rampage; Burned Businessman.

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Paid programming.

Forensic science catches up with a killer who murdered Mary Catherine Edwards in Beaumont, Texas in 1995.

Can new forensic science identify Cathy Sposito's murderer from an Arizona hiking trail in 1987?

Susan Eads is found murdered in Texas in 1983; decades later, can modern forensics identify the perpetrator?

In 1986, Barbara Carr is killed during a home invasion; will new technology close in on the perpetrator?

Susan Eads is found murdered in Texas in 1983; decades later, can modern forensics identify the perpetrator?

In 1986, Barbara Carr is killed during a home invasion; will new technology close in on the perpetrator?

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

A murder on Valentine's Day leads to a trial with unexpected twists and turns and a surprise ending.

Heidy and Conrad Truman are an enviable couple with a bright future; then, one fateful night, Heidy is found dead of a gunshot wound to the head; in the aftermath of her death, accusatory fingers are pointed at someone who may very well be innocent.

Bermuda Triangle; Campus calamity; Car crash thank you; Breakout mom; Healing touch.

Witch hunt; The other intern; Victorio's gold; Phantom judge.

War of the Depues; Update: Gypsy Fraud; Armando Garcia; Big Foot; Payback Killer; Florida Flim-Flam + UD.

Con Artist Cop; Astarte; Mystery Hitchhiker; Holy Grail; Update: Carlucci; Train Wreck Amnesia.

Suspicious Suicide; RFK Pix; Without a Song; Grace's Ghost; Update: If the Truth Be Known; Vampire Kids.

A man who was arrested and tried three times for the death of his wife of four months talks about the case.

A girl's recovery from a gunshot wound inspires the community to get her justice.