Mr. Wilson and Henry buy a new property, which they later find out is a haunted house.
An amusing Season 3 episode, with two good guest actors. Harvey Korman plays the unscrupulous real estate who sells the house.
Sgt. Mooney hears about this and tells Henry and Wilson that the house is thought to be haunted. Dennis is happy about that and wants to tell his friends.
The house is being occupied by a hobo (Harold Gould). Korman and Gould would later appear together on the Carol Burnett Show.
The hobo makes sounds through the vents to scare people, Dennis and Tommy hear it when they are there with Wilson and Henry. The two men decide to spend the night in the house. Dennis, Tommy and their friend also decide to go there and wear sheets to scare away the ghosts.