Mark of a Killer (2019)

First Air Date: 2019-01-20
Last Air Date: 2022-04-23
Total Seasons: 4
Total Episodes: 34
Episode Runtime: 43 min.

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.