First joint venture for Natalie Dormer and Irish fiancé director Anthony Byrne. Aside from starring in it and directing it, respectively, they both wrote it.
Natalie Dormer said she was upset after critics deemed her movie In Darkness, which she co-wrote and produced, to have a "gratuitous" sex scene. "I was mortified that it had been interpreted in a gratuitous way. It was like a slap in the face," the actress said. Dormer defended the scene in an interview with The Guardian in July 2019. "There has to be sexuality in the power play of a thriller. In this film, the sex scene, which for me was a love-making scene, is a metaphor for the way my character connects with the part played by Ed Skrein. If the lead characters do not have a clear connection, then it doesn't work. And on screen it has to be a physical connection between two broken people. That was my intention."
Natalie Dormer and Joely Richardson both played one of Henry VIII's six wives in The Tudors (2007). Dormer as Anne Boleyn, Richardson as Catherine Parr.
The character Alex states she is "45 and a size 10", Joely Richardson who plays this character was born in 1965 & was 53 the year the film was released.