Mark of a Killer (2019)
| First Air Date: | 2019, January 20 |
| Last Air Date: | 2022, April 23 |
| Status: | Returning Series |
| Seasons: | 4 |
| Episodes: | 34 |
| Episode Runtime: | 43 min |
| Countries: | United States of America |
Overview:
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.