Mark of a Killer - Season 4
1 - The Monster
Air Date: April 2, 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.
2 - The Bayou Strangler
Air Date: April 9, 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.
3 - The Skull Crusher
Air Date: April 16, 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.
4 - The D.C. Sniper
Air Date: April 23, 2022
A serial sniper terrorizes the entire D.C. metro area by discreetly targeting random victims out in public and in plain sight.