The Film is loosely based on W. W. Jacobs' short story The Monkey's Paw.

This is the 4th Horror movie which will feature Joey King. She acted in Wan's The Conjuring and Quarantine and is set to co-star in an upcoming Slenderman film adaption.

A hotel/elevator scene was shot at Hilton Toronto/Markham Suites Conference Centre & Spa on 11/28/16 between 8pm and 6am. Particularly a clip where Joey King, Sydney Park and Shannon Purser take a selfie in the lobby and Sydney Park notices a woman in the elevator behind them.