Mark of a Killer (2019–)
Oxygen True Crime · Crime · 3 seasons · 60 min
Still airing
Serial killer behaviors, postmortem rituals, and crime scene souvenirs are examined in Mark of a Killer.
Seasons
- Season 1 · 2019
- Season 2 · 2020
- Season 3 · 2021
Oxygen True Crime · Crime · 3 seasons · 60 min
Still airing
Serial killer behaviors, postmortem rituals, and crime scene souvenirs are examined in Mark of a Killer.
