The unanswered questions consume us...

Seemingly motiveless, riddled with rumors of occult practices.

Were sinister forces behind the holiday tragedy?

Decades later, her whereabouts remain a mystery. 

Jim Barclay was found in a shallow grave in what was the Wonnangatta Murders. Authorities suspected the cook, John Bamford, until Bamford's body turned up.

In December 1901, authorities found the body of young Nell Cropsey floating in North Carolina's Pasquotank River.

In 1961, Joan Risch vanished from her Massachusetts home, leaving behind two children, a distraught husband, and a kitchen streaked with blood.

In 1887, four brothers stumbled across the brutalized body of a young woman in Rahway, New Jersey.

Giulia Canella swore the photo depicted her long lost husband. Was it really him?

Maybe you can be the one to finally crack the case ... before it cracks you.

When the officer finally lifted the piano's dust cover, he found Sigrid’s lifeless body stashed beneath it...

Her burned and beaten body was found along a lonely country road. Who was the "Pyjama Girl"?

Her brutal slaying electrified the community with terror, sadness, and a demand for justice.

He's one of England's most infamous criminals ... but was he actually guilty?

Neighbors watched William open the back door. There, sprawled across the parlor floor, was Julia's lifeless body.

Who killed Isidor Fink? Most bafflingly of all ... how?

Can you crack the code to this baffling cold case?

This is completely terrifying.

When Emily Dimmock's family finally entered her apartment, they discovered a gruesome sight.

He thought they were sleeping ... until he saw the ants crawling across their bodies.