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TV14HDMark of a Serial Killer49mOxygen True Crime Archives

Police in Hartford, Conn., investigate a string of ruthless killings in the Asylum Hill area committed by a killer with a devastating mark that leaves his victims nearly unrecognizable.

Original Air Date: Apr 16, 2022

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Available on demand
Fri, Apr 25, 4:00 PM
Sat, Apr 26, 5:32 PM

More episodes

S3, EP5 "Classified to Kill"
Upcoming

S3, EP5 "Classified to Kill"

Chicago detectives believe that a serial killer is using classified ads to lure and murder his victims.

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S3, EP6 "The Interstate Killer"
Upcoming

S3, EP6 "The Interstate Killer"

A killer crisscrosses the Midwest leaving a string of victims along the interstate, but when he realizes investigators are hot on his trail the murderer suddenly changes his mark.

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S3, EP7 "The Grim Sleeper"
Upcoming

S3, EP7 "The Grim Sleeper"

A cold-blooded killer conceals his victims' bodies with trash, discarding them like garbage in the back alleyways of Los Angeles.

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S3, EP8 "The Tourniquet Killer"
Upcoming

S3, EP8 "The Tourniquet Killer"

A Houston killer taunts the media and authorities as he uses homemade ligatures to murder his victims.

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S3, EP14 "The D.C. Sniper"
Ended

S3, EP14 "The D.C. Sniper"

A serial sniper terrorizes the entire D.C. metro area by discreetly targeting random victims out in public and in plain sight.

S3, EP13 "The Skull Crusher"
Ended

S3, EP13 "The Skull Crusher"

Police in Hartford, Conn., investigate a string of ruthless killings in the Asylum Hill area committed by a killer with a devastating mark that leaves his victims nearly unrecognizable.

S3, EP12 "The Bayou Strangler"
Ended

S3, EP12 "The Bayou Strangler"

When multiple victims' bodies are dumped around Louisiana's bayou area, a task force is formed to catch a killer who police believe may have strangled over 20 men.

S3, EP11 "The Monster"
Ended

S3, EP11 "The Monster"

Investigators in East Baton Rouge, La., hunt for a serial murderer who carefully carves up and cuts the bodies of his victims after death.


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"Mark of a Serial Killer" examines the disturbing behaviors of serial killers. Step into the minds of some of the worst serial killers to date as they taunt law enforcement. Some of these killers get a perverse gratification by habitually stealing mementos from murder scenes, including things like shoes, jewelry, keys, and even body parts. All of these stolen things are meant to taunt the investigators while the killers build up their notoriety. The killers often leave trademark clues behind as a way to mark something that was theirs, but the investigators often use these as clues to find them.
Starring: Alicia Rosato, Ashley Georgakopoulos, Bruce W Greene, Chester Goad, Erica Mary Gillheeney, Jennifer Giles, Matthew Atchley, Michael Justice, Neftali Hernandez, Oliver Hoig, Samuel French, Steve Eifert
Original Air Date: Jan 20, 2019
Genres: DocuseriesTV Series
Rating: TV14
Playback: HD
3 seasons available on demand
Available on

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