Continuity mistake: When his wife has to answer the door for the sheriff while browsing her laptop for info on the dead woman when returning to her room she is frantically trying to call Ray. In the first clip of her pacing on the phone the laptop is missing from the table. Seconds later from another angle the laptop magically reappears open and in the place she left it.
Continuity mistake: When Howard squishes a praying mantis on the mirror, it shows the splat on the Bible reflected as well as the dead mantis stuck to the mirror. When it cuts away to a distance shot, the size of the splat on the Bible grows bigger, and the mantis' body disappears from the mirror, leaving only a yellow splat. (01:22:50)
Continuity mistake: Tommy gives Ray a tip and starts to walk out the door. Ray slides the money off the desk and is shown reaching back to put it in his back pocket. It cuts to a view of Tommy driving off in his truck and then back to Ray from a different angle, and it shows Ray reaching back again to put the money in his pocket a second time. (00:18:30)
Continuity mistake: Tommy, the truck driver, offers Ray a tip and Ray puts a money box on the desk and opens it. After they discuss him not wanting to accept the tip for a moment and then Tommy walking away letting him keep it, it cuts to Ray putting the money in his back pocket. In that shot the money box has disappeared from the desk, without him ever having touched it again in that scene. (00:18:10)
Visible crew/equipment: Once Ray uses the bolt cutters to open the door to the swimming pool service room, he walks in down a hallway illuminated from behind by the light coming in. As he is walking the camera follows him and you can see faintly the shadow of the cameraman on the wall as they move. (00:14:20)
Continuity mistake: Ray is in their new room and pulls out a picture of his daughter. He sits on the bed looking at it and then looks up, staring out the window. His wife walks in as he's still looking straight ahead and then it cuts to an angle from behind and suddenly Ray's head is titled down with him looking down at the picture again. Only for him to lift his head to look out the window again a couple seconds later. (00:13:25)
Visible crew/equipment: During the opening while Ray and Maggie are driving at night, you can see the lighting equipment for the green screen reflected in Ray's glasses. And throughout the entire movie, these green screens and other production lights can be seen reflected in his glasses in several different scenes. (00:04:00)