It’s impossible to watch a true crime television show or listen to a podcast without hearing the name of a serial killer – Ted Bundy, Joseph James Deangelo, Samuel Little. But how do we know that a murderer is a serial killer, especially if there’s no forensic evidence to link crimes together? Our guest today is going to answer that question. Join us as Dr. Johnston interviews Dr. Gabrielle Salfati, a pioneer in the field of crime scene analysis and one of the founders of investigative psychology, a branch of psychology that uses science to help law enforcement solve crimes. C. Gabrielle Salfati is currently Full Professor of Psychology at John Jay College of Criminal Justice where she directs the Investigative Psychology Research Unit (IPRU).