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After Kristen Grindley is found severely beaten on a road in Pullman, Wash., the investigation is hampered by the fact she cannot remember a single detail about the night in question.

Conflicting physical evidence confounds detectives after beauty queen Nona Dirksmeyer is found beaten to death in her Arkansas home.

Slain Swain; Goldie's Girl; James Van Praagh Parts 1 and 2; Thanks Big Brother; Fugitive Counterfeiter.

Kay Mortensen took pride in preparing for every possible threat, so when he was found dead at home, those who knew him were stunned; the brutal killing put two of Kay's loved ones behind bars and in danger, but the truth may set them free.

Out with his fiance on Halloween, a man leaves a bar with the rowdy crowd behind him and is never seen again.

Paid programming.

Paid programming.

A town in Washington lives in fear after a 17-year-old girl is abducted and raped without a suspect in sight.

For six decades, police work to identify the person who murdered a 9-year-old girl.

Police spend decades trying to identify a baby whose body was discovered in 1982.

Police work to identify the perpetrator of a brutal murder from 1980.

Police spend decades trying to identify a baby whose body was discovered in 1982.

Police work to identify the perpetrator of a brutal murder from 1980.

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.

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

Paid programming.

Paid programming.

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.

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

A chance meeting at a nightclub ends in murder; those involved in the gruesome crime thought they had buried the secrets of the past, but a relentless team of investigators will stop at nothing to unearth the truth.

Secrets emerge and a family is torn apart when a cop's wife is shot to death in her bed.

When Tina Sandoval disappears, her parents and loved ones spend years searching for her; a secret she was keeping may lead to clues about what happened to her.

Bomb Throwing Fugitive; Paisley Hat; Mrs. Millionaire; Kyra's Crisis; Shack Fire.

Vice Cop; Searching for Morgan; Sign From Heaven; Pizza Bandits; Lucie's Last Fare; Loving's Lost Love.

Priest Killer; Chicago Kidnap; Brinks; QI Gong; Update: Ready Teller Robbery; Such is Life.

Diaz Dog Days: Part 1 and 2; Murder by Arson; Baby Broker; Lost Sailor.

Donald Eugene Webb; Internet Abduction; Child Prodigies; Fatal Obsession; Update: Surprise Sister; Oregon Heir.

Paid programming.

Paid programming.

Police spend decades trying to identify a baby whose body was discovered in 1982.

Police work to identify the perpetrator of a brutal murder from 1980.

For 15 years, northern California is haunted by a serial rapist until genetic genealogy finally reveals the identity of the elusive sexual predator.

In 1976, a 16-year-old girl is found murdered near a roadside ditch in the small town of Walton, Ky.

For 15 years, northern California is haunted by a serial rapist until genetic genealogy finally reveals the identity of the elusive sexual predator.

In 1976, a 16-year-old girl is found murdered near a roadside ditch in the small town of Walton, Ky.

Save thousands on car repairs.

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Paid programming.

Paid programming.

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.

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

The parents of a missing South Carolina woman speak out about her disappearance.

Repairman Death; Hero Molester; White Bird; Heads Up; Update on Mary and Martha; Nazi's Lazarus.

Kay Hall; Mail Bombings; Trish's Miracle; Powers of Katie; Best Friends.

Motorcycle Murder; Amber Swartz; Carlos' Con; Maine Petition; Message in a Bottle; Foster Son.

R.F. Kennedy Part 1 and 2; Gurdon Light; Tina's Search; Where's Baby Le-Zhan; Doggie Bowser MD.

Featuring Who Killed Jeanine Parts 1 and 2, Animal Saviours, Bus Stop Amnesia, Point Blank, Miriam's Memory.

A tight-knit Long Island family go to extraordinary lengths to find their missing sister.

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.

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.

A love triangle leads to years of stalking, property destruction, threats and murder.

Operation Smile: transforming lives and bringing smiles to children around the world.

Paid programming.