This Is Quite the Ingenious Scheme
The four men moved slowly to carry out their strategy, which, to be fair, was ingenious. They planned on leaving behind dummy heads in their mattresses to provide the appearance of sleep to the guards. The fake heads might be used to make a safe exit from their prison. But even once they escaped their cell, they would still need to figure out how to leave the prison and the island. There was a lot at stake, and those who tried to escape Alcatraz were met with deadly force by the guards.