Ellen Sherman is found murdered at home while her husband is away sailing. The murder investigation uncovers allegations of wife swapping and multiple affairs. The case goes cold until a famous forensic scientist and a teenager help crack the case.

A long haul trucker disappears just before New Years. Thirteen years later a tax fuel auditor goes missing. The investigation into one case expands into another, and police uncover one of the most bizarre and grisly crime scenes they've ever seen.

A young woman with a new job and on the verge of marriage is found dead in her home with her throat slit and "#1" scrawled on the wall in lipstick. Is she the first of many who will fall prey to a serial killer?

38-year-old Danny Coleman's charred remains are discovered 50 miles from home, and the investigation to hunt down his killers will take almost two decades and involve sex, drugs, and a voice reaching out from the grave.

Two frat brothers become inseparable, but after college their once close friendship ends in murder.

A beloved small town city worker is gunned down at work.

A young woman is killed and her live-in boyfriend fights for his life after being shot twice in the head. As a close-knit family struggles to cope with their sister's senseless murder, they're shocked to learn the sad secret she took to her grave.

When 21-year-old Rose Goggins goes missing, leaving her 1-year-old son behind, police have a gut feeling something is terribly wrong. They soon find her car, but not her body. Now, the only thing more shocking than what happens to Rose is who did it.

The charred remains of an unidentified man are discovered in Florida.

When 15-year-old Annie Kasprzak was found brutally murdered, her foster parents were devastated. It would take a dedicated rookie detective shifting through false leads and digital forensics to uncover the shocking truth of what happened to Annie.

Two baby girls are switched at birth and sent home to the wrong families. One mother suspects foul play, and a high stakes custody battle ensues. Barbara searches for one of the girls, now grown, whose life has taken a completely unexpected turn.

Six-year-old beauty queen JonBenet Ramsey is found murdered in her Boulder, Colorado home in 1996. Investigators try to unravel if she was killed in a kidnapping-gone-wrong, by a home intruder or by one of her own family.

The Golden State Killer's reign of terror is over. Law Enforcement have finally located and apprehended the suspected serial murderer who's held the nation in a grip of paralyzing fear since the 1970s.

A young couple enjoys an impromptu camping trip in Leadore, Idaho, until their 2-year-old son suddenly vanishes. Investigators and private detectives work around the clock to find the missing boy, only to point the finger back at the parents.

When a young family suddenly vanishes from their Southern California dream home, friends and family are left with dozens of unanswered questions. Authorities suspect they fled the country, until an unlikely source uncovers the truth.

One summer night in 2007 comes as a nightmare for the Petit family when woken up by two strangers in their quiet, peaceful home of Cheshire, Connecticut. Suddenly this family of four finds themselves held hostage and in a fight for their lives.