Is Mark of a Killer coming back?

Mark of a Killer's return is unconfirmed. The show last aired its most recent episode on April 23, 2022, and there is no scheduled date for a new season.

This series is a crime documentary that first premiered on January 20, 2019, on Oxygen True Crime. It examines serial killer behaviors, postmortem rituals, and crime scene souvenirs, providing insights into the minds and methods of notorious criminals. The show has aired three seasons, with the most recent concluding in April 2022.

Each episode has a runtime of approximately 60 minutes. The series continues to explore the darker aspects of criminal behavior and forensic investigation.