Sora Wong had "zero experience" acting professionally before she was cast in the film. Her mother came across a casting call on Facebook looking for a visually impaired girl. Wong was born with coloboma and microphthalmia, which left her blind in her left eye, with very weak vision in the right.
Sally Hawkins does her own stunts in the movie
The Philippou brothers were originally attached to direct a film adaptation of Street Fighter in 2023, but exited to focus on this film, inspired by psycho-biddy horror.
Filming took just 41 days.
A tie-in website set in the universe of Bring Her Back and Talk To Me called blackangeltapes.net provides further insights as to how Laura came to own the possession ritual tape in the film, what the circular motions she traces on the window and Ollie's head signify, and why the demon possessing Ollie is constantly hungry.