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Taking a deep dive into serial killers' depraved psyches to reveal their darkest secrets.

Posed to Kill
Episode 143 mins
A serial killer terrorizes the University of Florida, killing five students in under four days.
The Last Call Killer
Episode 242 mins
In New Jersey four bodies are found dismembered, bagged and thrown in roadside garbage cans.
An Eye for Murder
Episode 343 mins
Dallas police discover three women murdered with their eyes surgically removed.
Pattern of Murder
Episode 443 mins
A killer hijacks the highways of Sacramento as several women are found strangled.
Mementos of Murder
Episode 543 mins
When the Hillside Stranglers are caught, police realize there is another serial killer loose.
An Appetite for Murder
Episode 643 mins
A killer rides the rails and leaves a literal trail of bread crumbs after eating at victims' tables.

Mark of a Serial Killer (Trailer)1:20

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How many seasons of Mark of a Serial Killer are there?: Peacock currently has 3 seasons of Mark of a Serial Killer available for streaming.

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