10 Mysterious Disappearances You've Never Heard Of

A three-in-one here.

In June 1962, convicted felons Frank Morris, Clarence Anglin and his brother John Anglin joined a select list of men who breached the walls of Alcatraz Jail. Built in the mid-19th century, situated on an small island 1.25 miles offshore from San Francisco, Alcatraz initially served as a lighthouse and military prison. From 1934 to 1963, the complex was used as a civilian prison, 'hosting' such notorious names as Al Capone and Machine Gun Kelly.

Over that span, 14 escape attempts were made, involving 36 inmates. Six of these were shot and killed, 23 caught, and a further four confirmed drowned. The bodies of Morris and the Anglin brothers, however, have never been located. To aid their escape, the trio built papier-mâché models of their heads, constructed from toothpaste, dust, soap, toilet paper and hair from the barbershop floor, which they used to fool guards into thinking that they were asleep in their bunks.

They then escaped through ventilation-ducts beneath their cell sinks and set off across the bay on a make-shift raft. Although remnants of the raft were eventually found, together with some personal belongings, speculation remains as to whether the fugitives made it ashore and, if so, where they went next.