Ingrassia lost his mother, two sisters, brother, and nephew to cancer—different cancers developing at different points throughout their lives. And while highly unusual, his family is not the only one to wonder whether their heartbreak is the result of unbelievable bad luck, or if there might be another explanation. Through meticulous research and riveting storytelling, Ingrassia takes us from the 1960s—when Dr. Frederick Pei Li and Dr. Joseph...