Someone Behind the Door

Someone Behind the Door
Film poster
Directed by	Nicolas Gessner
Produced by	Raymond Danon
Written by	Marc Behm Nicolas Gessner Jacques Robert Lorenzo Ventavoli
Starring	Charles Bronson Anthony Perkins Jill Ireland
Music by	Georges Garvarentz
Cinematography	Pierre Lhomme
Edited by	Victoria Mercanton
Production company	Lira Films
Release date	15 September 1971 (USA premiere)
Running time	97 minutes
Country	France
Language	English

Someone Behind the Door (French: Quelqu'un derrière la porte) is a 1971 French crime-drama film directed by Nicolas Gessner. In the UK, it was twice retitled as Two Minds For Murder (theatrical title) and Brainkill (VHS title). The film was shot on location in Folkestone, England.

A neurosurgeon hires an amnesiac to murder his wife, believing that the man will have no memory of what he had done, providing him a perfect alibi.

Almost all of the film was shot at various locations in Folkestone. Key locations include Folkestone Harbour and Beach.