Homicide: Life on the Street S03E20 - The Gas Man

Pembleton is oblivious to being relentlessly stalked by "The Gas Man," a man he sent to jail for negligence in a gas explosion that killed a whole family. The stalker steals evidence from a gruesome crime scene--the severed head of a Gypsy fortuneteller and a bloody knife. His plan is to force Pembleton to meet him alone and exact revenge.