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)
Revealing mistake: When Jason rips Jimbo from the door, it shows a close up of his hand. Looks and tears like rubber. (01:17:15)
Continuity mistake: When Trish's car stops, the licence plate goes from dirty to clean. (00:28:10)
Revealing mistake: When Tina is thrown out of the window by Jason, you can see she is wearing soft body suiting on her legs as she hits the car. (00:59:25)
Continuity mistake: When Jimbo gets his hand impaled on the counter with a corkscrew by Jason, the counter is clear, but a few scenes later as Jason leaves the kitchen, there's a pot holder laying on the counter. (00:58:25 - 01:01:20)
Revealing mistake: Trish tells Tommy to go get a hammer and some nails. When Trish then shouts "Tommy, hurry" you can see the shelf to her right get bumped by somebody in the crew, who was obviously standing nearby. (01:13:50)
Revealing mistake: Just before Trish jumps out of the window, as Jason runs forward to get her, you can see that he has normal, human eyes, instead of his disfigured, strange eyes, seen at the end of the movie. (01:18:00)
Revealing mistake: Near the end when Trish is running from Jason, Jason crushes a lamp on the floor and for an instant it becomes pitch black. A moment later, the room is lit again by a sudden occurrence of "moonlight." (01:23:15)
Continuity mistake: When Trish and Tommy push the cupboard in front of the door, the figurines and items on the shelves move/fall off/reappear between consecutive wideshots and closeups. (01:15:10)
Revealing mistake: When Trish has entered her house after escaping from Jason, she hears him behind her in the doorway, and swings at him with a machete, but hits the door frame. You can see there's a mark from a previous swing. (01:19:20)
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)
Revealing mistake: When Trish and her mom are jogging, a bush in front of them moves before they run by it, caused by the cameraman brushing it as he walked backwards. (00:14:10)
Revealing mistake: Near the end when Jason throws the hammer at the girl, it sticks to the damaged part of the wall after it hits. But it's just against the wood with the flat top, there's nothing to hold the hammer there and it's only hit the wood on the other side of the wall. They probably used a magnet to attract and keep it there for safety reasons. (01:15:00)
Visible crew/equipment: When Paul is stabbed by Jason's harpoon and lifted up in to the air, the wires attached to him are visible on either side. (00:45:40)
Continuity mistake: In Part III, Jason's fingernails were neat and trimmed, but in Part IV (which occurs the very next day), they are long and black. (00:07:00)
Continuity mistake: As Jason breaks into Tommy's room, a purple monster mask on Tommy's wall starts to spin, then stops a few shots later, then starts spinning again in the next shot. (01:16:00)
Revealing mistake: When Trish jumps out the window and falls to the ground you can see her using a body suit covering her from her hips and down her legs. (01:18:15)
Continuity mistake: After electrocuting Jason with the TV, he falls backwards, and the door is left open. When Trish and Tommy walk over, the door is shut. (01:16:25)
Continuity mistake: Nurse Morgan's name tag is on the opposite side to the pocket with the pen in it, on her white nurse dress. Yet when Jason stabs Nurse Morgan, her name tag is right next to the pocket. (00:12:00)
Revealing mistake: When Trish jumps out through the window, rolls off the deck, and lands on the ground below, she obviously lands on a mat or some other protective device covered to look like mud. It jiggles like jelly in a perfect square when she lands on it. (01:18:15)
Answer: You can see from the inside of the house Gordon jumping through the window by himself. It shows him jumping on the table then through the window.
lartaker1975