Watch Alcatraz: The Greatest Escapes

Hellcatraz. America's Devil's Island. The Rock. It was the world's fiercest maximum security prison and home to legends like Al Capone, Machine Gun Kelly, and the Birdman, Robert Stroud. Over nearly thirty years, they all dreamed of escape and some actually tried. We'll take a fresh look at the facts with never-before-seen interviews with inmates, guards and even the families of Alcatraz correctional officers. Plus, a newly discovered letter has surfaced that may reveal the fate of the Rock's most infamous escapees. Find out why prisoners would do anything to break free of The Rock on Alcatraz: The Greatest Escapes.