 He and Stella later marry, but his mother disapproves and this causes a permanent rift between mother and son.He is abruptly transferred to the federal penitentiary at Alcatraz (the "Rock"), a new maximum security institution where he is not permitted to keep birds.He is now growing elderly but remains rebellious, writing a history of the U.S. penal system that is suppressed by Shoemaker, now warden of the Rock.