Continuity mistake: When Eric locks Mia in the basement after she vomits all over Olivia's face, the amount of vomit on Olivia's forehead drastically changes between shots.
Continuity mistake: Towards the end, right after Mia crawls through the tunnel and into the shed, she backs up against some shelves. There is a lot of blood on her face and her hair is hanging over her face. The shot changes to a close-up and her face now has much less blood on it and the hair that was hanging in her face is gone. (01:16:25)
