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.

When a vivacious young escort, Shannan Gilbert, vanishes on Long Island’s south shore in 2010, her disappearance leads police to discover the bodies of ten other victims dumped by a serial killer.

The discovery of four women’s bodies on Gilgo Beach was just the beginning. But who is the Long Island Serial Killer? Investigators uncover multiple suspects and shocking theories, as they race to capture this prolific killer before he strikes again.

In 2011, a 10-month-old baby girl goes missing from her home in Kansas City. The family fears she’s been kidnapped by a drifter, only to be accused by the police of being responsible for her disappearance.

Outgoing Jackie Galloway is found strangled and bound with ritualistic knots. Police investigate suspects in her inner circle but are shocked when a chance encounter with a prowler leads them to discover the murderer is a budding serial killer.

A mother and three teens are murdered in the remote town of Keddie, California. Despite a trail of suspects and illicit activity, no one was ever brought to justice. But recently discovered evidence may be the key to finally cracking case.