Buzzfeed Unsolved: True Crime: Season 4

The Sinister Disappearance of Jimmy Hoffa

23min - What really happened to this famed Mob figure?

The Bizarre Collar Bomb Bank Robbery

28min - This deadly bank robbery was just the beginning.

The Mysterious Death of the Eight Day Bride

19min - Accidental death, or deadly love triangle?

The Incredible Alcatraz Prison Break

23min - Four men, an infamous island prison, and one daring plan. But what happened next?

The Covert Poisoning of an Ex-Russian Spy

21min - An ex-spy is murdered with an unusual poison. Was it an enemy or his former employers?

The Odd Death of Charles C. Morgan

16min - Secret agent, criminal or something more sinister?

The Bizarre Disappearance of Bobby Dunbar

25min - A boy is lost... and found. Or is he?

The Treacherous Treasure Hunt of Forrest Fenn

30min - In this season finale, Ryan and Shane search for real-life buried treasure.

The Chilling Black Dahlia Murder Revisited