The BEST episodes of Mark of a Serial Killer season 3

Every episode of Mark of a Serial Killer season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Mark of a Serial Killer season 3!

"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.

Last Updated: 11/20/2024Network: OxygenStatus: Continuing
star
8.00
7 votes

#1 - The Monster

Season 3 - Episode 11 - Aired 4/2/2022

In East Baton Rouge, investigators are on the hunt for a serial murderer. Their main clue? The killer carefully carves up and cuts the bodies of his victims after death.

Watch Now:Amazon
star
7.80
15 votes

#2 - Summer of Fear

Season 3 - Episode 10 - Aired 11/7/2021

Chaos descends on Phoenix as two serial killers compete for the media's attention and the bodies pile up faster than the police can investigate.

Watch Now:Amazon
star
7.69
13 votes

#3 - The Interstate Killer

Season 3 - Episode 6 - Aired 10/17/2021

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.

Watch Now:Amazon
star
7.67
6 votes

#4 - The D.C. Sniper

Season 3 - Episode 14 - Aired 4/23/2022

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

Watch Now:Amazon
star
7.50
10 votes

#5 - Deaths in the Desert

Season 3 - Episode 9 - Aired 10/31/2021

El Paso investigators race to track down a ruthless killer that is burying his victims in shallow desert graves, dead or alive.

Watch Now:Amazon
star
7.41
17 votes

#6 - Classified to Kill

Season 3 - Episode 5 - Aired 4/16/2021

Chicago detectives believe a serial killer is using the classified ads to lure and murder his victims. The investigation is set ablaze when flames obliterate evidence, until police make a shocking discovery.

Watch Now:Amazon
star
7.33
12 votes

#7 - The Grim Sleeper

Season 3 - Episode 7 - Aired 10/24/2021

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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The I-95 Killer
star
7.29
21 votes

#8 - The I-95 Killer

Season 3 - Episode 2 - Aired 4/13/2021

After multiple men are discovered brutally murdered, investigators determine that each victim was last seen with a handsome stranger they met in a bar. Police ask the public for help in tracking down a dangerous drifter before he kills again.

Watch Now:Amazon
star
7.20
5 votes

#9 - The Skull Crusher

Season 3 - Episode 13 - Aired 4/16/2022

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

Watch Now:Amazon
star
7.17
6 votes

#10 - The Bayou Strangler

Season 3 - Episode 12 - Aired 4/9/2022

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

Watch Now:Amazon
star
7.11
9 votes

#11 - The Tourniquet Killer

Season 3 - Episode 8 - Aired 10/31/2021

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

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The Charmer
star
7.00
16 votes

#12 - The Charmer

Season 3 - Episode 3 - Aired 4/14/2021

A series of women in the Seattle area are found brutally murdered, their bodies posed. Police realize they may have a killer stalking the area nightclub scene, one who is able to charm his victims into submission.

Watch Now:Amazon
star
6.94
16 votes

#13 - The Englewood Killer

Season 3 - Episode 4 - Aired 4/15/2021

Chicago police are investigating the murders of several women, whose bodies are discovered in abandoned buildings barefoot. Evidence indicates there is one offender, now police need to locate him.

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The I-40 Killer
star
6.83
24 votes

#14 - The I-40 Killer

Season 3 - Episode 1 - Aired 4/12/2021

A killer is murdering and mutilating young women along the Route 40 corridor in Delaware. But when investigators set up an undercover operation, the hunter soon becomes the hunted.

Watch Now:Amazon