
Trivia: In the scene of Missy's funeral, Stephen King plays the priest.

Trivia: In the original script, after making it to the docks, a dog would appear and start barking at Jason prompting Jason to kick it. Kane Hodder refused and even stated that as evil as Jason was, he'd never hurt an animal, so the scene was dropped.

Trivia: In the dream sequence of the asylum where Amanda Krueger is trapped by the hundred maniacs one of the maniacs looks remarkably like Freddy. Presumably this was his biological father. (Of course this man was played by Robert Englund, the actor who plays Freddy)

Trivia: In one version of the script, Martin finds another videotape of his father Seth. This tape would show Seth (who is in his part-fly form) explaining the "cure". This scene would have required Jeff Goldblum to be in make-up for five hours, and he didn't want to go through that, so he dropped out, and the scene was cut from the script.

Trivia: During one take of a fight scene between Dr. Sam Loomis and Michael Myers, Donald Pleasance accidentally broke Don Shanks' nose.

Trivia: Reportedly, late in post-production, the lead effects artist had a mental breakdown because he realised he had bitten off more than he could chew and couldn't deliver the effects on time. Director Wes Craven had to rush to locate all the negatives (which were scattered all over LA) and hire more effects artists to try and get the effects done as quickly as possible. Craven has said this is why some of the effects shots are "pretty sketchy" - there was no time to properly finish them.

Trivia: The film is also widely known as "The McPherson Tape." However, this was never the official title, and is seemingly based on a misconception since the film was often circulated without the title attached in the 90s. Regardless, this incorrect title became so well-known that the film's 2020 Blu-Ray by American Genre Film Archive (AGFA) contains a double-sided cover... one with the correct title "U.F.O. Abduction," and the other with the misnomer title "The McPherson Tape."