Credits · 20
Staged: Deadly Deception
2026 · Self - Forensisch Psychologe
FilmThe Serial Killer's Apprentice
2025 · Self
One Night in Idaho: The College Murders
2025 · Self - DeSales University Professor (archive footage)
FilmThe Idaho Student Murders
2025 · Self - Serial Killer Expert & Former Teacher of Bryan Kohberger (archive footage)
FilmThe Mysteries of Bradshaw Ranch: Aliens, Portals, and the Paranormal
2024 · Self - Forensic Psychologist / Author
The Torso Killer Confessions
2023 · Self - Forensic Psychologist
FilmSins of the Father: The Green River Killer
2022 · Self - Forensic Psychologist
FilmBTK: Confession of a Serial Killer
2022 · Self - Author & Professor of Forensic Psychology
BTK: Confession of a Serial Killer
2022 · Self - Forensic Psychologist
FilmThe Co-Ed Killer: Mind of a Monster
2021 · Self - Forensic Psychologist
Becoming Evil: Serial Killers
2019 · Self - Forensic Psychologist / Author
The Mark of a Killer
2019 · Self - Forensic Psychologist
American Monster
2016 · Self - Forensic Psychologist
Occult Crimes
2016 · Self - Professor of Forensic Psychology
Your Worst Nightmare
2014 · Self - Forensic Psychologist
FilmCarl Panzram: The Spirit of Hatred and Vengeance
2011 · Self - Forensic Psychologist
Killer Kids
2011 · Self
FilmAlbert Fish: In Sin He Found Salvation
2007 · Self - Forensic Psychologist
Northern Mysteries
2006 · Self
20/20
1978 · Self - Professor of Forensic Psychology, DeSales University (archive footage)