- Richard LinternSelf - Narrator
- Craig JacksonSelf - Head of Psychology, Birmingham City Univers
- Mike BerrySelf - Forensic Psychologist, RCSI
- David HolmesSelf - Criminal Psychologist, Manchester Metropoli
- Emma KennySelf - Psychologist
- Geoffrey WansellSelf - Author & Expert on Serial Killers
- Keri NixonSelf - Forensic Psychologist
- Kerry DaynesSelf - Consultant Psychologist