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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?

At Oak Street Health, our doctors take the time to get to know you and your needs. We can help you get the most out of your Medicare coverage, set up mail-order prescriptions, and coordinate healthcare & social services. VISITOAKSTREETHEALTH.COM.

Paid programming.

Paid programming.

Paid programming.

A mother of two who vanishes during a storm turns out to be a victim of something sinister.

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.

A Kentucky man is convicted of murdering his co-worker; the mystery is considered solved until a stunning disclosure years later turns the closed case upside down.

Magic, The Gathering; Lightning Family; Update: Dennis Keith Smith; Thelma and Louise; Dede's Gone; Sweetheart Escape.

Mia Zapata; Billy the Kid; Wanted Nanny; Dreams Come True; Calculating Coroners.

Home Invasion Spree; Lost Adams Diggins; Update: Sweetheart Escape; Men in Black; Salsa Swindlers; Molester Cop.

Emery's Last Stand; Hansen Twin Murder (Parts 1 & 2); Pix of the Dead; Update: Fatal Obsession; Baseball Amnesia.

After Dinner Death; George Anderson (Parts 1 & 2); Rudolph on the Run; Update: Campus Murder Expose; Palm Beach Embezzler.

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.

Dungeons and Dragons; Roubas: Dead or Alive; Amnesia Victim; Philip Breen; Update: Satchel Bandit; Donna on Fire.

Dakota's Double Death; Resurrection Mary; TWA 800 Conspiracy; Noble Brothers Run; Road Map Clues; Red Lake Heir.

Roswell (parts 1 and 2); Dottie Caylor; Marine Captain murder; update: Medford's Millions; Packer church fire.

Paid programming.

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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Paid programming.

Save thousands on car repairs.

Paid programming.

The homicide of private first class soldier and young mother Karlyn Ramirez; a glimpse into the FBI's crime lab and an in-depth look at how multiple agencies uncovered a plot that spanned several states and prompted suspicions of espionage.

When a hard-charging boss in Arizona is shot to death, police uncover a complex web of bruised egos in his professional life and a trail of broken hearts in his personal life.

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

Examining unsolved mysteries including Kilgore Isn't Here, Ground Zero, Dead Realtor, Lottery Machine, ATM Mystery, and Missing Anchorwoman.

Update: Who's Tyler?; Not Suicidal; Gordy's Ghost; Jeanne Boylan; Bowen Out.

Strychnine Death; Kidnapped Executive; Update: Murder in Connecticut; Swoops and Squats; Wandering Fishman; Major Lazarus.

Cases include Mystery Robber; Magnetic Attraction (Parts 1 & 2); Update: Johnny Lee Wilson; 911 Call for Help; Borden House.

Texas wife murder; Falcon lake UFO; Trucker death; rider down.

A Jacksonville, Fla., firefighter discovers a disturbingly violent scene in his darkened bedroom on a Halloween weekend.

An in-depth interview with Charles Manson's former parole officer; rarely seen video of Manson; interviews with victims' family members, and others close to the case.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

When a mother is murdered in a home invasion the day before her best friend is shot outside the place they both worked, investigators suspect the crimes are linked.

Connie Craig-Carrol & Founder Ken Meares investigates Omega XL, the ultimate all-natural solution for joint pain from inflammation.

Paid programming.

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?

Years after her murder in 1991, will new forensic tools finally find Danielle Clause's killer?

A woman's skeletal remains are found in Okaloosa County in 1994; it sparks a years-long search for her identity and killer, until a new forensic tool provides answers.

Years after her murder in 1991, will new forensic tools finally find Danielle Clause's killer?

A woman's skeletal remains are found in Okaloosa County in 1994; it sparks a years-long search for her identity and killer, until a new forensic tool provides answers.

Paid programming.

At Oak Street Health, our doctors take the time to get to know you and your needs. We can help you get the most out of your Medicare coverage, set up mail-order prescriptions, and coordinate healthcare & social services. VISITOAKSTREETHEALTH.COM.

Paid programming.

Paid programming.

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.

A husband comes under suspicion after the disappearance of his wife.

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.

Casolaro; Update: Themla and Louise; Mothman; Elysian Park Treasure; Fatal Flowers; Missing Rainman.

Two Mary Murders; The Dale; Carolina Cop Killer; Haunted Mansion; Update: Red Lake Heir; Florida Fire.

Love Triangle; Ghostly Attraction; Update: Shigemoto's Bodyguard; Amtrak Sabotage; Artist for the Prosecution; Fake Doctor Fraud.

An in-depth look at a series of unsolved mysteries including Millionairess Murder, Medjugorje, Where Is She Now?, and Huey's Quest.

Cases include of A Couple of Good Men; Ladies Man; McDonald's Murder; Lucky Choir; Vanished in the Heartland.

The investigation into the disappearance of a mother of three in Colorado reveals she was living a double life.

When a woman returns two days after being reported abducted, authorities believe it's a hoax until a similar crime forces them to take another look.

An investigation into the murder of a beloved couple in South Carolina reveals a feud and divides a family.

Examining unsolved mysteries including Kilgore Isn't Here, Ground Zero, Dead Realtor, Lottery Machine, ATM Mystery, and Missing Anchorwoman.

Update: Who's Tyler?; Not Suicidal; Gordy's Ghost; Jeanne Boylan; Bowen Out.

When remains are found amid the rubble after a house fire, authorities soon discover the incident was no accident.

Paid programming.

Paid programming.

Years after her murder in 1991, will new forensic tools finally find Danielle Clause's killer?

A woman's skeletal remains are found in Okaloosa County in 1994; it sparks a years-long search for her identity and killer, until a new forensic tool provides answers.

Police in Southern California were called to a particularly violent murder scene; advances in forensic genealogy finally solved the case.

A young woman is found beaten to death in Wisconsin in 1984; killer evades detection for decades until a revolutionary DNA method reveals his identity.

Police in Southern California were called to a particularly violent murder scene; advances in forensic genealogy finally solved the case.

A young woman is found beaten to death in Wisconsin in 1984; killer evades detection for decades until a revolutionary DNA method reveals his identity.

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Tired of bloating or gut issues that won't go away? Discover the root cause-and how Emma can help eliminate methane-producing archaea, reset digestion, and restore balance naturally.

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Paid programming.

When a complicated Texas love triangle ends in murder, a pink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

After a mother of two mysteriously vanishes, a young video gamer shares a tale with detectives that leads to the discovery of a diabolical plot.

A wife and mother survives an attack in her home and a shot to the head; authorities search for a motive.

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

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.

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

After a woman reports a prowler, police find her Olympic bronze medalist husband dead in their backyard.

Strychnine Death; Kidnapped Executive; Update: Murder in Connecticut; Swoops and Squats; Wandering Fishman; Major Lazarus.

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

A trail of texts helps prosecutors build a case in the disappearance of Kevin Mengel, but a surprise awaits them.

Paid programming.

Paid programming.

Police in Southern California were called to a particularly violent murder scene; advances in forensic genealogy finally solved the case.

A young woman is found beaten to death in Wisconsin in 1984; killer evades detection for decades until a revolutionary DNA method reveals his identity.

In 2018, two paralegals are shot dead while at work in Scottsdale, Ariz; four more victims are linked to the killing.

A beloved local teacher is brutally attacked in her Pennsylvania home; after 27 years, dedicated investigators trace her killer.

In 2018, two paralegals are shot dead while at work in Scottsdale, Ariz; four more victims are linked to the killing.

A beloved local teacher is brutally attacked in her Pennsylvania home; after 27 years, dedicated investigators trace her killer.

Paid programming.

Paid programming.

Paid programming.

Paid programming.

A woman accused of attempting to hire a hit man to kill her husband.

A Georgia couple's romantic tryst takes a deadly turn, leaving investigators stumped -- until tire treads at the scene and cell phone calls reveal a twisted plot.

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.

Archie McFarland was stabbed to death and his murder went unsolved for twenty-five years.

A man disappears after a duck hunting trip in Florida on his sixth wedding anniversary and is later found to have been murdered.

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

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.

A mother of three married to a missionary is found dead on Valentine's Day; the investigation into the murder reveals answers close to home.

Casolaro; Update: Themla and Louise; Mothman; Elysian Park Treasure; Fatal Flowers; Missing Rainman.

Two Mary Murders; The Dale; Carolina Cop Killer; Haunted Mansion; Update: Red Lake Heir; Florida Fire.

Love Triangle; Ghostly Attraction; Update: Shigemoto's Bodyguard; Amtrak Sabotage; Artist for the Prosecution; Fake Doctor Fraud.

An in-depth look at a series of unsolved mysteries including Millionairess Murder, Medjugorje, Where Is She Now?, and Huey's Quest.

Cases include of A Couple of Good Men; Ladies Man; McDonald's Murder; Lucky Choir; Vanished in the Heartland.

Paid programming.

Paid programming.

In 2018, two paralegals are shot dead while at work in Scottsdale, Ariz; four more victims are linked to the killing.

A beloved local teacher is brutally attacked in her Pennsylvania home; after 27 years, dedicated investigators trace her killer.

In 1979 two young boys find their mother's dead body in the living room; how the investigators track down the killer with no solid leads.

In 1976 a woman was left for dead in her home in southern California; despite a major manhunt, the violent killer avoided detection for over four decades.

In 1979 two young boys find their mother's dead body in the living room; how the investigators track down the killer with no solid leads.

In 1976 a woman was left for dead in her home in southern California; despite a major manhunt, the violent killer avoided detection for over four decades.

Paid programming.

At Oak Street Health, our doctors take the time to get to know you and your needs. We can help you get the most out of your Medicare coverage, set up mail-order prescriptions, and coordinate healthcare & social services. VISITOAKSTREETHEALTH.COM.

Paid programming.

Paid programming.

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

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

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

Murder Premonition; Lady and the Tramp; Getaway Photo; Coma Recovery; Newman's Lost Love; Update: Cop Assault.

Stamper's Rampage; Desperately Seeking Susan; Mucho Oro; Airline Employee Murder; Update: DJ Death; Hospital Hoax.

An in-depth look at unsolved mysteries including Rainboy, Louisiana Burning, Update: Car Crash Thank You, Donut Murder, and Social Security Murder.

Baron 52 Crew; Scared to Death; Update: Thumbs; Fertility Statues; Rest Stop Killer; Thank You Philip.

Casino Bandit; Update: Carolina Cop Killer; Cop Assault; Amelia Earhart (Parts 1 & 2); Down on the Farm.

When a young, handsome veterinarian is found dead in his home in Montana, the mystery remains unsolved for nearly two decades.

When a San Diego woman who is near death arrives at an emergency room, the FBI and local law enforcement are called in to try to solve a medical mystery and a horrific crime.

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

A man who was recently acquitted of the murder of his ex-girlfriend's 12-year-old son tells his story; interview with the victim's mother and key players in the case.

Paid programming.

Paid programming.

In 1979 two young boys find their mother's dead body in the living room; how the investigators track down the killer with no solid leads.

In 1976 a woman was left for dead in her home in southern California; despite a major manhunt, the violent killer avoided detection for over four decades.

A lorry driver is found dead behind the wheel in Camberley, England; police use a revolutionary technique of familial DNA analysis.

A young woman's body is discovered close to her home in Bath, England; police eventually track down the perpetrator of the heinous attack.

A lorry driver is found dead behind the wheel in Camberley, England; police use a revolutionary technique of familial DNA analysis.

A young woman's body is discovered close to her home in Bath, England; police eventually track down the perpetrator of the heinous attack.

Paid programming.

Paid programming.

Paid programming.

Paid programming.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided.

Two decades after a Jacksonville, Fla., woman goes missing, her son solves the mystery that haunted his childhood.

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

Don Kemp Story; Moss Beach Ghosts; Kerouac Fan; Update: Marsh, N.Y., State Serial Rapist; Baby's Breath.

Poison Pen; Champ; Li'l Miss + UD; Motorcyclist's Samaritan + UD; Update: Shroud of Turin.

Son of Sam; 48-Hour Fraud; Twisted Sisters; Update: Train Wreck Amnesia; Miracle Staircase.

Dreamy Disappearance; Mom & Pop Murders (Parts 1 & 2); Mystery Hum; Update: Missing Ex-Monk; Stalker Reward.

Marine Destroyed; Texas UFO; Lacrosse Star Murder; Larceny Lady; Update: Ladies Man; Phillip's Angel.

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

An investigation of a woman found murdered in Fort Worth, Texas.

When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

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.

Paid programming.

Paid programming.

A lorry driver is found dead behind the wheel in Camberley, England; police use a revolutionary technique of familial DNA analysis.

A young woman's body is discovered close to her home in Bath, England; police eventually track down the perpetrator of the heinous attack.

After being reported missing, a young couple's bodies are discovered more than sixty miles apart; how the dedicated investigators eventually find the killer.

The police investigation into the Washoe County murder.

After being reported missing, a young couple's bodies are discovered more than sixty miles apart; how the dedicated investigators eventually find the killer.

The police investigation into the Washoe County murder.

Paid programming.

Paid programming.

Paid programming.

Paid programming.

Before time runs out, detectives race to find a Little Rock, Ark., realtor who went missing after showing a house.

A community is left in shock when a Cornell student and star athlete gets caught in the middle of a homicide investigation.

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

Sunnyvale Stalker; Missing in-Laws; Calling Dr. Fraud; Incredible Journeys; Update: Social Security Murder; Candy and Roxy.

Daughter Seeks Justice; Butch Cassidy; Pizza Man; Ghost Boy; Update: Amish Hostage Murder; Big Mac Shootout.

Dale Disappeared; Beauty Salon Killer; Death and Disappearance; Mom's Genetic Curse.

An in-depth look at a series of unsolved mysteries including Dying to Confess, Vince Foster, Walk-Ins, Missing Ex-Monk, Update: Thanks Big Brother, and Aphrodisiacs.

Desiree, an undesirable woman; the Bermuda Triangle; murder in Arlington; update on the hotel balcony death; a rainy day.

Murder Premonition; Lady and the Tramp; Getaway Photo; Coma Recovery; Newman's Lost Love; Update: Cop Assault.

Stamper's Rampage; Desperately Seeking Susan; Mucho Oro; Airline Employee Murder; Update: DJ Death; Hospital Hoax.

An in-depth look at unsolved mysteries including Rainboy, Louisiana Burning, Update: Car Crash Thank You, Donut Murder, and Social Security Murder.

Baron 52 Crew; Scared to Death; Update: Thumbs; Fertility Statues; Rest Stop Killer; Thank You Philip.

Casino Bandit; Update: Carolina Cop Killer; Cop Assault; Amelia Earhart (Parts 1 & 2); Down on the Farm.

Don Kemp Story; Moss Beach Ghosts; Kerouac Fan; Update: Marsh, N.Y., State Serial Rapist; Baby's Breath.

Poison Pen; Champ; Li'l Miss + UD; Motorcyclist's Samaritan + UD; Update: Shroud of Turin.

Paid programming.

Paid programming.

After being reported missing, a young couple's bodies are discovered more than sixty miles apart; how the dedicated investigators eventually find the killer.

The police investigation into the Washoe County murder.

In 1994, 42-year-old Le Bich-Thuy is found dead next to her home; decades later, DNA and genealogy technology allow detectives to track down the killer.

A decades-long police investigation includes one of the worst miscarriages of justice in UK history.

In 1994, 42-year-old Le Bich-Thuy is found dead next to her home; decades later, DNA and genealogy technology allow detectives to track down the killer.

A decades-long police investigation includes one of the worst miscarriages of justice in UK history.

Paid programming.

Paid programming.

Save thousands on car repairs.

Paid programming.

The convicted murderer of a popular teacher is given a second chance at freedom when new evidence is revealed.

When a luxury car dealer is found dead, detectives suspect one of his lovers, but lack of evidence stalls the case for a year, until one clue breaks it wide open.

After a young father is found dead in his home in Jonesboro, Ark., the authorities search for the killer.

An in-depth look at a series of unsolved mysteries including Thomas Drake, Mad Maggio and Viet Pilot's daughter.

Twin Behind Bars, Unknown Arsonist, Fugitive Drug Dealer, Queen Mary Ghost Ship, Lucky Lost Love, and more mysteries.

What Happened to Natasha; Canadian UFO; Kiss of Death; Update: Drunk Driver; Ohio Video Robbery.

An exploration of the cases of Battling for Her Brother, Man Who Never Was, Robbinghood and Life After Life.

Model's Third Notebook; Port Chicago; Math Teacher Escape; Miracle Maker; Grandma's Grave.

When a dog trainer with celebrity clientele disappears, investigators track down a suspect with the help of two witnesses.

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

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 sister of a man who died after robbing a bank when a bomb that was placed around his neck detonated talks about the case.

Connie Craig-Carrol & Founder Ken Meares investigates Omega XL, the ultimate all-natural solution for joint pain from inflammation.

Paid programming.

In 1994, 42-year-old Le Bich-Thuy is found dead next to her home; decades later, DNA and genealogy technology allow detectives to track down the killer.

A decades-long police investigation includes one of the worst miscarriages of justice in UK history.

In 1973, two young girls are found murdered in the Welsh village of Llandarcy; the killer's identity remains a mystery until 2002.

With the help of familial DNA, detectives are able to track down and capture a serial rapist.

In 1973, two young girls are found murdered in the Welsh village of Llandarcy; the killer's identity remains a mystery until 2002.

With the help of familial DNA, detectives are able to track down and capture a serial rapist.

Connie Craig-Carrol & Founder Ken Meares investigates Omega XL, the ultimate all-natural solution for joint pain from inflammation.

Paid programming.

Paid programming.

Save thousands on car repairs.

Randy Baker finds his calling as a counselor then winds up dead.

Authorities work to establish why a loving mother was brutally stabbed to death in her home.

Lurking in the woods and peeping through windows, a cold-blooded serial killer stalks his next victim.

Missing Teacher; Gander; Civil War Ghosts; Preppie Rape Trial; Update: Mom's Genetic Curse; Racial Rift.

Furniture Store Shoot Out; Comedy Store Ghosts; Gypsy Fraud; Shopping Mall Pen Pal; Update: Thank You Phillip.

Bentwaters UFO; Search for Kristi; Cult of Decloud; Update: Dates; Orthodox Jew.

Dead Man's Tale; Thanks Lieutenant Stephens; Telephone Call; Computer Con Killer; Ghost Writer.

Unsolved mysteries including the likes of Whistle Blown, Brenda's Fire, Southie, Electric Lady, and Marsh.

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