The maximum-security federal penitentiary Alcatraz sits on 12 acres in the middle of San Francisco Bay and was conceived by J. Edgar Hoover to house America's most dangerous criminals. It was built to be escape-proof and was until June 1962 when three men-Frank Morris and brothers John and Clarence Anglin-did the unimaginable. How did they manage this extraordinary feat in a top-security environment? Did they survive or drown? Find out in this truth-is-stranger-than-fiction program.