Frank, Clarence, and John escaped alive because of experience escaping other prisons. On page six it states “Morris was certainly no stranger to escape. An armed robber, he had already escaped from several prisons.” This shows that Frank could escaped even the most challenging prisons on Earth. John, Frank, and Clarence could escape the brutal Alcatraz because of experience with many other prisons.
Frank and his friends were cunning with their movements so they could bust out of Alcatraz alive. On page six it