A decades old murder is investigated when a steel drum is unearthed with the remains of a pregnant woman inside.

In Michigan, two women and a baby are found murdered in a burning house, and it will take police more than 30 years to bring the killer to justice.

A mummified corpse is found in an abandoned rock quarry, but it will take 23 years for investigators to identify the victim, dubbed "Marvin the Mummy," and bring his killer to justice.

A countrywide manhunt for a suspect who shot two on-duty police officers comes to a shocking conclusion 46 years later.

Two women are killed on the same dirt road, but police struggle to solve the murders until a third attack takes place.

When a Florida man is found dead from a vicious attack, the hot pursuit of a man seen fleeing the scene comes up short. Nearly twenty years later, a fresh look at old evidence helps cold case investigators put a name to the killer.

A series of detectives devote 30 years to solving the brutal rape and murder of a high school student

When a young woman suddenly vanishes while trying to repair a flat tire, investigators put together the pieces of a dark and heinous crime.

In 2002, three teens fishing on a lake are left for dead when a speed boat rams their vessel. When one of victims dies from his injuries, two Texas Game Wardens become unlikely homicide investigators in a case spanning eight years.

When store clerk Marie Dupe is stabbed to death on a snowy Nova Scotia night, the evidence leads to a dead-end. Eight years later, detectives stage an elaborate sting to get the truth, straight from the killer's mouth.

When a local retiree vanishes without a trace, his daughter partners up with investigators to solve the mystery behind his disappearance, and eventually bring the person responsible to justice

While investigating the shooting deaths of newlyweds Gail and Rick Brink, detectives go down a dark path that leads to a shocking motive and an unexpected killer.

In Scottsdale, Ariz., a homicide case that will take 30 years to solve begins with 14-year-old Greg Holman's failure to show up for dinner.

A Jonesville, NC policeman is found dead at the side of the road after pursuing a suspicious vehicle out of town. Years after the trail for his killer goes cold, a veteran investigator is pulled out of retirement to close the fallen officer's case.