Author Riley Sager talks about his creepy new book Lock Every Door, which fuses the thriller, horror, and goth genres. Sager talks about his origin story from struggling writer to best-selling novelist with endorsements from RL Stein and Stephen King. We learn how he gets his ideas, outlines his stories, and pushes through writer's block. Sager also speaks honestly about his insecurities, and why he decided to pivot to writing thrillers and using a pseudonym.