"Behind Closed Shutters" is the feature version based on the much celebrated short film of the same name, directed by Michaël Nakache in 2015.
The short film "Transference"' was not supposed to be adapted into a feature film. After hundreds of people asking Michael Nakache if "Transference" was a proof of concept, the idea came up to develop it into a feature version.
The main inspiration for "Behind Closed Shutters" is Hitchcock's "Psycho" and De Palma's classic thrillers such as "Sisters" and "Dressed to Kill."