Since 2023, disgraced crypto founder Sam Bankman-Fried has been incarcerated; first in Brooklyn, then in two federal prisons in California as part of a 25-year sentence for fraud and conspiracy. Throughout, he has maintained his innocence. He has also, in his way, adapted to life on the inside. This is the fascinating core of Simon van Zuylen-Wood’s feature, which draws on countless conversations with the man corrections officers call “Bankman,”…