You Can’t Diagnose a Killer From Your Couch | Criminal Psychology & True Crime

Can you diagnose a killer from a video—or are you seeing what you already believe?In Episode 1 of The Crime Doc, Dr. Sheard examines criminal psychology, body language, deception analysis, hindsight bias, confirmation bias, and the dangers of diagnosing criminal behavior from short videos after the outcome is already known.Can body language actually reveal guilt? Can facial expressions identify deception? And how much of what we think we see is influenced by already knowing what happened?This episode explores the difference between observation and diagnosis, the limits of deception detection, and why legitimate psychological assessment requires far more than watching someone on a screen.Nothing about the video changed. You did.The Crime Doc examines true crime, criminal behavior, criminal justice, and forensic psychology through research and professional analysis—not sensationalism.Evidence over assumptions. Facts over narratives.