In the late 1980s, New Castle County in Delaware became the hunting grounds for The Corridor Killer. Once captured, Steven Pennell was convicted of the murders of Shirley Ellis and Catherine DiMauro. He plead No Contest in the murders of Margaret Finner and Michelle Gordon. Kathleen Meyer's body has never been found, though she is suspected to be a fifth victim of Pennell. After his trial, Pennell was sentenced to death.
Sources for this episode:
Wikipedia - Steven Brian Pennell, Glasgow, Delaware, Census-designated place, New Castle, Delaware, James T. Vaughn Correctional Center
Murderpedia - Steven Brian Pennell