Inspired by a true story. A petty criminal sent to Alcatraz in the 1930s is caught attempting to make an escape. As punnishment, he is put in solitary confinement. The maximum stay is supposed to be 19 days, but Henry spends years alone, cold and in complete darkness, only to emerge a madman and soon to be a murderer. The story follows a rookie lawyer attempting to prove that Alcatraz was to blame, and that Henry should not be executed.