23 TV Characters Recast After The Actor Quit the Show
Cousin Marilyn (The Munsters)
Apparently, the actress originally tasked with playing Cousin Marilyn really hated the job. Beverley Owen was under contract at Universal and she felt like she had been forced into the role. She was miserable because her fiancé lived in New York and the show shot in Hollywood.
After a season of misery, Beverley was released from her contract and allowed to return to New York. She was replaced from then on by Pat Priest, who played Marilyn for the rest of the series. Meanwhile, Beverley got married and had to deal with the career consequences of leaving the show early.