Plot holes: It's made clear that Marilyn is from Lily's side of the family, yet her last name is 'Munster'. Marilyn is Lily's sister's daughter, so Marilyn should have had Lily's sister's last name, which would not have been 'Dracula' if Marilyn's mother was married and had a married name. Lily's sister may have married a Munster too, but then that doesn't explain why Herman often says that Marilyn's looks have nothing to do with his side of the family. Apparently, Marilyn has simply taken the Munster family name.
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