Mark of a Serial Killer

Following serial killers on the trails of their obsession and taking a deep dive into the killers' depraved psyches to reveal their darkest secrets as investigators close in to end the killers' reign of terror.

The I-95 Killer

S3 E2

After multiple men are discovered brutally murdered, investigators determine that each victim was last seen with a handsome stranger they met in a bar.

The Englewood Killer

S3 E4

Chicago police investigate the murders of several women, whose bodies are discovered in abandoned buildings barefoot.