Mark Olshaker is a novelist, nonfiction author, and Emmy Award-winning filmmaker. He has written and produced numerous documentaries, including the Emmy-nominated PBS NOVA program Mind of a Serial Killer.
John Douglas, Ed.D., is one of the most respected lawmen in the world and has tracked down some of the most notorious and sadistic killers of our time. He is also the author of six bestselling books recounting his adventures in the FBI and one other career guide. He is the author of the "New York Times"-bestselling "Mindhunter" and "Journey into Darkness".