55 Years Later, Alcatraz Escapee sends this note.

The Magical Signal

Three of the four prisoners were ready to go at this point, but the gang still had to wait for Allen West—who had not yet completed excavating the hole in his cell even though he was eager to go. He struggled more to catch up to the rest of the gang since the walls on his side of the jail made climbing more challenging.

He was not at last ready until June, two months later. Something happened at that very moment that might completely ruin the story. He told his fellow gang members he was ready to move ahead.