The Scooby-Doo Show

Season 1, Episode 7

Episode Title: The Harum-Scarum Sanitarium

Air Date: 1976-10-23

Overview:

On vacation in Niagara Falls, the gang end up at a mental asylum haunted by a former doctor ghost, Dr. Coffin. When the kids notice ambulances coming and going with no patients, they decide to find out what they are really carrying.