Vatican Girl: The Disappearance of Emanuela Orlandi

Take a trip inside the mind of Bill Gates as the billionaire opens up about those who influenced him and the audacious goals he's still pursuing.

When a suspect is found in a journalist's murder, the case is considered closed until a secret diary suggests 13 more victims — and possible cannibalism.

When Lori Vallow's kids vanished, the search for them unearthed a trail of suspicious deaths, a new husband who shared her doomsday views — and murder.