Continuity mistake: When the man drives his car into the cornfield and hits the boy with his vehicle and rescues the mom and her son they run out of the cornfield and back to the house. After the house catches on fire they run outside and his car is parked in the driveway.
Continuity mistake: In the last scene outside there is a lot more machinery assembled than the one engine Sir Thomas was working on.
Continuity mistake: When Gordo leaves Simon and Robyn for a few minutes to handle a work thing, Simon starts mocking Gordo in his absence. Simon tells Robyn that Gordo wants to nail her and Robyn says "Stop it," but Simon continues his mocking of Gordo. At the end when Simon is listening to the recording that Gordo made of that conversation, Robyn's "Stop it" is absent.
Continuity mistake: When Griffin gets out of bed, when he hears the clown song he pushes the bed sheets forward about 3 feet from the pillow but when his dad goes into Griffin's room, the sheets have been pulled up about half that length.
Continuity mistake: When Specs and Tucker first arrive, pay attention to the cupcake Tucker is eating. When Tucker says "Thanks little man, some of my best editing on that one!", the cupcake still has frosting on top and he begins to peel the wrapper from it. The film cuts and suddenly there's no more frosting, nor is his hand still removing the wrapper. Then, over the next series of edits, the amount of frosting on the cupcake and the amount of cupcake left in his hand changes repeatedly.
Continuity mistake: When Keanu is talking with his wife on the tablet, he closes his shirt with his left hand, but in the image of him on the tablet, his shirt is still open.
Continuity mistake: Spoiler alert: About halfway through the movie, we see Emma Roberts coming out of the shower, and the camera focuses on the gunshot wound on her shoulder, with the round scar of the entry wound on her back, and the much rougher, ragged scar of the exit wound on her front. Then at the end of the movie, where it's revealed that Kiernan Shipka and Emma Roberts were actually playing the same character, just nine years apart, Kiernan Shipka gets shot by the police officer when he finds her in the room with the severed heads. Problem is: she was facing the officer. The scars on Emma Roberts are the wrong way around. (00:31:05 - 01:15:35)