Hello, I'm Mark Olshaker, an American author hailing from Washington, D.C. With a passion for criminal and investigative psychology, I've had the privilege of collaborating with FBI agent John E. Douglas on numerous books delving into the minds of serial criminals.

In 1995, John and I co-founded Mindhunters, Inc., dedicated to exploring the depths of criminal behavior and sharing our findings with the world. Our groundbreaking work culminated in the release of "Mindhunter: Inside the FBI's Elit