Revealing mistake: In the part in the motel where THING is doing morse code on the table to Gomez you can see the cut-out in the table where the guy's hand is sticking through the table.
The Addams Family (1991)
Ending / spoiler
Directed by: Barry Sonnenfeld
Starring: Christopher Lloyd, Christina Ricci, Anjelica Huston
Fester got amnesia because of a trip to the Bermuda Triangle. The fake doctor and Tully are killed and the family lives happily every after. Morticia is pregnant. Tully's wife Margaret, marries Cousin It and joins the Addams clan.
Grappa
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Trivia: The part of Morticia was originally offered to Cher, who passed because she felt that "The Addams Family" wouldn't do enough to boost her slumping (at least at the time) film career.
Question: When Gordon and his mother are in Tulley's office, how does Tulley see a resemblance between Gordon and Fester? I thought he had not been seen for 25 years.
Answer: He's seen pictures and paintings of young Fester and notices a resemblance. Like you said, no-one had seen him in 25 years, so all that was required was a passing similarity.
Brian Katcher