In part three, Mark and Alan talk personal safety—and how to get their free eBook on staying safe. Mark then slips on his FBI hat…and Agent Safarik talks profiling—behavioral crime analysis—what it is, how it works, and what it is not. He dispels some television-induced myths, explains what he looks for when he steps into a crime scene, and what it’s like when he steps into a room and talks with one of these violent serial killers.

Watch part four of Mark and Alan’s interview here or check out Alan’s other book trailers and author interviews here.