Kooky Spook is the first segment of the ninth episode of the first season of The Peter Potamus Show. It first aired on November 11, 1964.
Peter Potamus and So-So find themselves in McGruesome Castle, after springing a leak in their hot air balloon, and learn from the heir that the castle is haunted by the ghost of the former owner of the castle, Anguish McGruesome. Peter then decide to help the heir out by getting rid of the ghost, but it will only go away and the haunting will only be lifted if someone manages to stay in the castle until 5 o'clock in the morning. Easier said than done.