June 12, 1962. On this quiet morning at the maximum-security prison on Alcatraz Island, a guard notices something strange in the cells of inmates John and Clarence Anglin. When officials try to wake the sleeping inmates, they realize something major has gone down: the Anglin brothers, along with inmate Frank Morris, have escaped, and left behind paper mache heads as a decoy. In the decades since, the world has debated their fate as this escape remains unsolved.