Mark of a Killer Season 3 poster

Mark of a Killer — Season 3

202114 episodes7.0/10 (4 votes)

About this season

All serial killers commit murder to satisfy their grand fantasies, but the murderers featured in this true-crime docuseries take it one step further, committing heinous acts that allow them to extend their fantasies and relive the excitement of their crimes again and again.

Episodes (14)

1
E1

1. The I-40 Killer

Aired 12 April 2021 • 43 min

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.

2
E2

2. The I-95 Killer

Aired 13 April 2021 • 43 min

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.

3
E3

3. The Charmer

Aired 14 April 2021 • 43 min

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

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E4

4. The Englewood Killer

Aired 15 April 2021 • 43 min

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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E5

5. Classified to Kill

Aired 16 April 2021 • 43 min

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.

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E6

6. The Interstate Killer

Aired 17 October 2021 • 43 min

A killer crisscrosses the Midwest leaving a string of victims along the interstate. When investigators are hot on the highway killer’s trail, the murderer suddenly changes his mark.

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E7

7. The Grim Sleeper

Aired 25 October 2021 • 43 min

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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E8

8. The Tourniquet Killer

Aired 31 October 2021 • 43 min

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

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E9

9. Deaths in the Desert

Aired 31 October 2021 • 43 min

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

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E10

10. Summer of Fear

Aired 7 November 2021 • 43 min

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.

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E11

11. The Monster

Aired 2 April 2022

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

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E12

12. The Bayou Strangler

Aired 9 April 2022

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.

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E13

13. The Skull Crusher

Aired 16 April 2022

Police in Hartford, Connecticut 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.

14
E14

14. The D.C. Sniper

Aired 23 April 2022

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

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