Cold, Starving, and Alone: The Lost Franklin Expedition

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

The Vanishing Crew of the Carroll A. Deering: A Maritime Mystery

In 1921, the ship was spotted in North Carolina under suspicious circumstances. Days later, the crew and their belongings had disappeared – for good.

Murder in the Big Apple: Elma Sands and The Manhattan Well Mystery

Beneath the streets of New York's trendiest neighborhood is the scene of a 200-year-old unsolved murder.

Cold Case: The Somerton Man

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.