Dr. Katherine Ramsland has master's degrees in forensic psychology, clinical psychology, and criminal justice, and a Ph.D. in philosophy. She has published forty-three books, including SNAP:Seizing Your Aha! Moments , The Forensic Psychology of Criminal Minds , The Mind of a Murderer , and The Forensic Science of C.S.I. With former FBI profiler Gregg McCrary, she coauthored The Unknown Darkness: Profiling the Predators Among Us ; with Dr.

Henry Lee, she coauthored The Real World of a Forensic Scientist ; and with Professor James E. Starrs, A Voice for the Dead. She wrote biographies of Anne Rice and Dean Koontz, and her Crimescape e-book, Psychopath , was a #1 Wall Street Journal nonfiction bestseller. In addition, Ramsland has published over 1,000 articles on serial killers, criminology, and criminal investigation. She is a professor of forensic psychology at DeSales University in Pennsylvania, appears on numerous true crime documentaries, and writes a regular blog for Psychology Today .