Home to the likes of Al Capone and George 'Machine Gun' Kelly, Alcatraz was once the jewel in the American prison system. The wind-swept island fortress was the final stop for the nation's most dangerous criminals and was thought to be escape-proof - at least, until one night in June 1962, when three men on an improvised raft slipped into the icy waters of San Francisco Bay, never to be seen again. 

President Donald Trump has said that he is determined to reopen this notorious prison, so today we're revisiting this episode, Jolene Babyak, a historian of Alcatraz and author of 'Breaking The Rock', to give you a potted history of this notorious penitentiary.

Produced by James Hickmanna and edited by Dougal Patmore.

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