Mark of a Killer (2019)
- HD 1080
- Runtime: 43m.
- Status: Returning Series
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- Languages: en
- Country: United States of America
- Seasons: 4
- Episodes: 34
- First air date: 2019-01-20
- Last air date: 2022-04-23
- providers: fuboTV, Peacock Premium, NBC, USA Network, OXYGEN, Peacock Premium Plus
- The Mark of a Killer is featured in the top rankings of 2019
- #62 in Top Crime Series of 2019
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.