The unanswered questions consume us...

Mysterious fishing boats strewn with rotting corpses are washing up along the shores of Japan, and officials are baffled.

She fought to expose the hazardous conditions of the Kerr-McGee nuclear facility—and just may have paid for it with her life.

In 1845, the doomed Franklin expedition set sail for the Northwest Passage, never to be seen again.

In 1989, Jacob Wetterling vanished without a trace. 26 years later, authorities have finally announced a person of interest in the case.

In "Who Killed My Daughter?", a mother searches for the truth behind her daughter’s tragic death.

Deep in the heart of southern Spain, eerie faces have appeared on the kitchen floor of one family’s home.

This lonely ranch in Utah is haunted by ghostly voices, strange sightings, and UFO encounters.

She had a string of marriages – and famous suitors – but her final relationship with Robert Blake ended when she received a shot to the back of the head.

For years, the residents of an Ohio town were plagued by messages that revealed their darkest secrets.

Frightened citizens sealed their windows when reports of mysterious gas attacks spread from house to house. Could a mad gasser be on the loose?

In 1958, Johnny Stompanato was stabbed to death in Lana Turner's Beverly Hills home. Was this a case of tinsel town murder or justifiable homicide?

Their songs live on ... but the events surrounding their tragic deaths remain a mystery.

Meet the mind behind the Cold Case Investigative Research Institute, a real-life detective club that tackles unsolved murders throughout history.

On a quiet summer night in Iowa, eight people were bludgeoned to death while they slept in their beds.

He's one of the most famous figures in Australian history ... only because police can't figure out who he was or what happened to him.