Katherine Ramsland began her career as a writer with Prism of the Night: A Biography of Anne Rice. She had a bestseller with The Vampire Companion. Since then, she has published 40 books and over 1,000 articles, reviews and short stories. From ghosts to vampires to serial killers, she has taken on a variety of dark subjects. She holds graduate degrees in forensic psychology, clinical psychology, criminal justice, and philosophy. Currently, she teaches forensic psychology and criminal justice at DeSales University. Her books include The Forensic Psychology of Criminal Minds, The Human Predator: A Historical Chronicle of Serial Murder and Forensic Investigation, Inside the Minds of Serial Killers, Inside the Minds of Sexual Predators, and Inside the Minds of Mass Murderers. Her background in forensic studies positioned her to assist former FBI profiler John Douglas on his book, The Cases that Haunt Us, and to co-write a book with former FBI profiler, Gregg McCrary, The Unknown Darkness, as well as The Real Life of a Forensic Scientist with Henry C. Lee and A Voice for the Dead with James Starrs. She speaks internationally about forensic psychology, forensic science, and serial murder, and has appeared on numerous documentaries, as well as such programs as The Today Show, 20/20, 48 Hours, NPR, Coast to Coast, Montel Williams, Larry King Live and E! True Hollywood.