Every day, Curtis Carroll dons blue, state-issue jail garb. Every night, he sleeps in a cement cell. At 35 years old, he has spent his entire adulthood behind bars, and there’s a possibility he’ll never leave: He’s serving a sentence of 54 years to life, for murder. Among the inmates in California’s sprawling San Quentin State Prison, Carroll’s violent past is ordinary—but his present is anything but. In a place where physical toughness is the main way to earn respect, Carroll has built a following among his fellow prisoners by teaching them how to stay out of debt, draw up a budget—and pick stocks. His friends call ... (full story)