The movie “Munster Go Home,” released on August 6th, 1966, presents the familiar family in color—a distinctive feature given it’s one of the few film adaptations of a TV show to include the original actors while the series was still airing; the program concluded its run on May 12th. The storyline involves Herman inheriting an estate in England, prompting the Munsters' journey across the Atlantic, where they find themselves facing hostility from the remaining family members and uncovering something sinister. One notable change is the absence of Pat Priest as Marilyn, replaced by Debbie Watson to better align with the character’s age of 19 within the film’s narrative; at the time, Priest was over thirty years old. Although it didn't perform well in theaters, the movie served its intended function: introducing the characters internationally to pave the way for syndication of the show’s seventy episodes. Despite this, many viewers seem to prefer “Munster Go Home” over the later film, "The Munsters’ Revenge," which appeared fifteen years afterward and lacked Butch Patrick in his role as Eddie, and featured a different actress portraying Marilyn—though some consider her to be the best yet. Ultimately, the appeal lies with Fred Gwynne and Al Lewis and their on-screen connection, making any project they're involved in enjoyable and heartwarming; other memorable moments include the ship voyage, the hot rods, and the race sequence. The film’s runtime is 1 hour and 36 minutes, filmed primarily on Universal Studios backlots in Los Angeles, with the racing scenes shot at Paramount Ranch Racetrack in Agoura Hills—approximately a thirty-seven minute drive west of Los Angeles. It earns a grade of B.

Source on TMDB