Continuity mistake: When Agent Marcus is replacing the burnt bulb while standing on the ladder, between shots the bill of her baseball cap folds itself upward. (00:03:00)
Continuity mistake: On the field where Jason is being shot, Jason is equipped with a machete in his right hand. However when they drop the bomb onto him, Jason hears it and looks up, and in this shot you can see that Jason's machete has disappeared. (00:06:35)
Continuity mistake: When Luke and Deborah go into the tent, their shadows show Luke automatically take off the shirt she is wearing. But the next shot, when the camera goes into the tent, Deborah is once again wearing the shirt.
Plot hole: After Steven breaks out of prison, he goes to Jason's home. Then Jessica's boyfriend shows up talking on the phone and he says he will ask Jessica for permission to shoot their show at Jason's house. He should know that Jessica doesn't know she is a relative of Jason.
Revealing mistake: When Edna's head is slammed in the door, it is completely bloodless and her head appears to bounce back to normal shape. (00:34:55)
Continuity mistake: When Agent Marcus arrives at the Crystal Lake cabin at the start, the sun is low, but the sky is still bright. In the next shot as she goes into the house, the sky is pitch black. (00:01:10)
Continuity mistake: The note that Jessica found in Stephanie's crib changes. When she finds it, it reads "I have what you want " and is written in blue ballpoint pen. But when Steven finds the note later, it reads "I have your baby " and is now written in thick, black permanent marker. (01:08:35 - 01:11:15)
Other mistake: When Robert, who is possessed by Jason, is reaching through the car window to get Jessica and Steven, you can see his reflection on the car hood. This reflection should show Jason, as we've already seen in the movie that the host body Jason is in should show Jason in any reflection. (01:00:50)
Continuity mistake: When Deborah is impaled with a post in the tent, the amount of blood on Luke's face decreases between shots. (00:32:00)
Continuity mistake: After the female FBI agent falls over the railing and through the coffee table, the two legs closest to the screen roll away, but when the table is shown again, the legs are underneath it. (00:04:50)
Continuity mistake: The father of Jessica's baby, while in jail, had some of his fingers broken by Craitan Duke, but in the next scene, he is fighting another character and his hand with broken fingers is working fine.
Continuity mistake: When Steven gets punched by Randy there is blood filling his mouth, but a few seconds later there is barely any blood on his lips. (01:03:25)
Continuity mistake: When Steven is fighting with Randy by the police car, you can clearly see in one shot that he has his gun in the back of his pants, but later he pulls the gun out of the front of his jeans. (01:03:15)
Continuity mistake: While eating Jason's heart, the coroner's shirt is covered with the fountain of black fluid coming from his mouth, but when the assistant coroner comes in there is far less liquid on his shirt. (00:14:00 - 00:16:00)
Continuity mistake: When Steven runs possessed Robert over, black blood covers all of the bottom of his shirt, and all his trousers. But later, when he comes to the police station they're clean. (01:01:10 - 01:06:00)
Other mistake: Where were the crime scene people? Jessica goes to her mom's house and her friend from the diner is cleaning up the blood? Highly unlikely.
Suggested correction: We don't know how much time has passed since she was killed. Crime scene people would have come and gone. And what's wrong with her friend cleaning up the blood? She's just being a good friend.
I highly doubt in a murder scene the police would make you clean it up! Think about that.
That's absolutely what happens: https://www.aftermath.com/content/who-cleans-up-murders/. https://www.biohazardresponse.com/blog/three-things-you-need-to-know-when-your-home-is-a-crime-scene/ Once evidence is dealt with, everything left isn't the responsibility of the police to clean up. Most people would hire cleaners rather than do such an unpleasant job themselves, but it's the responsibility of the property owners to clean.
That's just your opinion. Unless you know police procedure in every state then you can't make that assumption.
Revealing mistake: Jason is being bombarded with gunshots and the machete isn't damaged at all. The bullets magically bounce right off it. And "spark".
Plot hole: It appears no one even did the slightest bit of police work in the murder of Jessica's mother, if they had they would have seen evidence that Steve's story was true. Like evidence of someone going out the window and the cop's fingerprints on the knife.
Continuity mistake: Jessica's baby changes from one scene to the time she arrives at her moms house. First, the baby doesn't have much hair. Then at the house, her hair is thicker and she seems to have grown a little.
Continuity mistake: When Debbie is in the tent with her boyfriend, she gets a condom out of the wrapper and throws it aside, still in the tent. Later on, the wrapper is outside the tent, because we see Jason step on it.
Suggested correction: We see her toss it. Don't see where it landed. Could have easily gone out the tent flap.
