Season
- Season 4 2022-04-02
- Season 3 2021-04-12
- Season 2 2020-04-09
- Season 1 2019-01-20
Mark of a Killer Season 2 Collar and Leash Killer
All serial killers commit murder to satisfy their grand fantasies, but the murderers featured in this true-crime docuseries take it one step further, committing heinous acts that allow them to extend their fantasies and relive the excitement of their crimes again and again.
