Plot hole: When Jason is going next door to chase after Trish, he pulls Jimbo's body down from the doorway and begins walking towards Trish's cabin. He is seen walking by himself. However in the next scene, he throws Rob's body through the window. There was no time for him to go back and get the body. (01:17:15)
Friday the 13th: The Final Chapter (1984)
1 plot hole - chronological order
Directed by: Joseph Zito
Starring: Crispin Glover, Corey Feldman, Peter Barton, Erich Anderson, Judie Aronson, Kimberly Beck
Genres: Horror
Revealing mistake: Trish jumps out the window and lands face up on the ground. You can plainly see it's Kimberly Beck's stunt double. She looks nothing like her. (01:21:35)
Jimmy: Ted. I think... I think when we get to town I should call Betty.
Ted: Jimbo, calling Betty is definitely a dead fuck thing to do. Look, first rule of love: never get rejected by the same girl twice. I mean, that's useless. If you want to make a fool out of yourself, always do it with someone new.
Jimmy: I don't know anyone new.
Ted: Well, sex is a great way to meet them.
More questions & answers from Friday the 13th: The Final Chapter
Chosen answer: He's not possessed. Dealing with Jason made him go crazy. In part 5, we find out he was in a mental hospital for a while, then gets sent to a home for troubled kids.