JOANNA SCHAFFHAUSEN is a scientific editor who spends her days immersed in research on potential new therapies for cancer, addiction, and neurological disorders such as Alzheimer’s disease. Previously, she worked as an editorial producer for ABC News, where she advised and wrote for programs such as World News Tonight, Good Morning America and 20/20. She holds a doctorate in psychology, which reflects her long-standing interest in the brain—how it develops and the many ways it can go wrong. Her debut novel, The Vanishing Season, won the Mystery Writers of America/St. Martin’s Minotaur First Crime Novel Award in 2016. She lives in the Boston area with her husband and daughter.