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.
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: 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: 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.