Daddy is the story of psychologist Tim Lewis’ trauma, substance abuse, and lifelong dedication to PTSD research, but it also turns out to be the story of America and the cycle of abuse and trauma that its endless wars create in American households and around the world. When Tim was twenty-eight years old, his father shot his mother while she was sleeping in his childhood bedroom. His father then turned the gun on himself. As Tim sat in the hospital room while his mother was pronounced dead, his friends and family seemed to have only one question for him: “How could this happen?” This book is his attempt at an answer.