Trivia

Special effects of having the ghost appear and disappear were mostly done by using a split-screen technique as also used in the short. Sandberg said "Whenever she's in frame with another character, it's basically just a split screen. So you shoot it with her and without her. You turn the camera on with her, you turn it off and she walks off, and then you turn it on again. It's super simple, actually." Sandberg also made a list of what he called the "light gags", or different ways to create light sources from flashlights to cell phones and gunfire. Director James Wan also put in the idea of replacing the flickering neon sign with passing car headlights. See more