The movie is a remake of writer Mattias Olsson's and producer Henrik JP Åkesson's 2011 Swedish film Försvunnen (2011).
Sam uses the tactic of appearing helpless (wearing a sling) and needing assistance with his car to try and lure Jessica out of her car. This is a tactic used by real life serial killer Ted Bundy. It is also used by Jame Gumb to lure Catherine Martin into his van in The Silence of the Lambs (1991).
The podcast playing in the car in the beginning is "Knifepoint Horror."
In January 2021, director John Hyams recorded a feature-length audio commentary for the film for the Rogue Commentary podcast.
The first conversation in the movie takes place almost ten minutes in, a phone call between Jessica and her father.