The following is an episode list for the CBS sitcom The Munsters. The series broadcast on September 24, 1964, and ended on May 12, 1966. Munster, Go Home! was a feature-length film released on June 15, 1966, as a spin-off from the main series. (Robert Pine, long before his regular series role in "CHiPs," appeared in it as a suitor for Marilyn, the "ugly black sheep" of the family.) A second spin-off, called The Munsters' Revenge, aired on television 15 years later on February 27, 1981.
Marilyn's boyfriend, Tom Daily, invites the Munster clan to a masquerade. Eddie (Butch Patrick) remains at home with Mrs. Morton as his sitter. Marilyn (Beverley Owen) goes as Priscilla, Lily (Yvonne DeCarlo) is Little Bo Peep, Grandpa (Al Lewis) is Napoleon and Herman (Fred Gwynne) is King Arthur in a suit of shining armor.
Concerned over Marilyn's difficulty in keeping boyfriends, Grandpa cooks up a love potion and slips it into her oatmeal. But when Marilyn refuses to eat breakfast, the potion ends up in the wrong mouths.
Suffering from insomnia caused by high electrical bills, Herman begins going on midnight walks. When other walkers see him, they are scared telling the police that a monster is free at the park along with a dangerous thief. This causes Police Commissioner Ludlow to send Police Chief W.R. Harris to find the culprit under threat of being reassigned to the "most desolate, deserted, law-forsaken part of town." Meanwhile, Grandpa invents an "enlarging machine" in order to help Eddie grow.
Herman and Grandpa eavesdrop on Lily and Marilyn and get the impression that Lily is pregnant. But the playmate whom she is expecting for Eddie is just Dr. Dudley's son, Elmer.
The city's gas department wants to run a pipeline 25 feet (7.6 m) under the Munsters's house. Unfortunately, at that level, it runs straight into Grandpa's laboratory.
Herman wants to attend a reunion of his Army buddies, but he cannot fit into his uniform. Since Lily does not want him to go, they make a deal that if Herman can lose enough weight to fit into the uniform, she will allow him to attend. Unfortunately, Herman starts his diet just as Thanksgiving is approaching--and a hunger-stricken Herman can be potentially dangerous....