Mark of a 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.
Top cast
No cast information.
Below are the streaming services currently carrying the TV show “Mark of a Killer” in the United Kingdom, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in the United Kingdom can differ from other countries.
Where to watch Mark of a Killer in United Kingdom
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Not currently available on the supported providers in United Kingdom.
Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 14 Sept 2026.