The movie is a remake of writer Mattias Olsson's and producer Henrik JP Åkesson's 2011 Swedish film Försvunnen (2011).
The podcast playing in the car in the beginning is "Knifepoint Horror."
The first conversation in the movie takes place almost ten minutes in, a phone call between Jessica and her father.
In January 2021, director John Hyams recorded a feature-length audio commentary for the film for the Rogue Commentary podcast.
Jessica drives a 1980s-era Volvo 240 station wagon. The Stranger drives a mid-nineties Jeep Grand Cherokee 4x4.