I’d taken a bit longer with my rounds and had to grab a late lunch at the hospital cafeteria, where I spotted Betty waving me over to sit with her. “They say Dr. Hart really nailed it in surgery,” she said with enthusiasm, as if she herself shared a piece of Caleb’s success. “It was a really complicated open-heart operation, but he still managed to impress everyone in the room.” I was still stunned by how young my boss was and the fact that he already had a cardiology specialty, so Betty’s words impressed me even more. “He must be a prodigy,” I said. “One of those kids who get into college before turning fourteen.” Betty lifted her fork to her lips and shrugged before answering. “I don’t know. Actually, no one does. Dr. Hart’s past is a mystery—it always has been.” I nearly choked on

