Continuity: Near the middle of the film when a few of the people in the house venture down to try and find the control room, Pritchett leads them to the Saturation chamber. When Eddie and Sara are leaving the room, we can see that Eddie passes Pritchett then Sara does, yet in the following shot, Eddie is still shoulder to shoulder with Pritchett and passing him again, and Sara is not behind Eddie, but on his right shoulder to shoulder with him. (Slow-mo is required).

Continuity: At the start of the film when we see Pritchett shake hands with Blackburn, in this shot we can see that Eddie is standing in front of Blackburn and slightly to the side of him, yet in the following shot Eddie is nowhere to be seen, and the shot after he is back in front of Blackburn.

Continuity: When Eddie and Sara get back from the basement of the house, Sara is explaining what happened to Blackburn and Evelyn. In the shot of Evelyn, the bottle of Vodka on the top is only half full, if that, then when the camera returns to Evelyn the bottle is filled almost to the top.