Schedule for Oxygen True Crimes Archive

Mark of a Serial Killer

Mark of a Serial Killer

A rash of young men goes missing around Chicago during the 1970s when bodies start washing up in the river, a pattern emerges a small piece of evidence leads police to the home of a model citizen, where his furnace puts the suspect in the hot seat.

2026-01-22 21:26:00 +0000 UTC2026-01-22 22:16:00 +0000 UTC(50m)