A chance photograph may reveal a murderer's identity - and someone's after the photographer!
Direction
Gilling squeezes Hitchcockian tension from a shoestring and a darkroom.
Cinematography
Gritty London locations that reek of cigarette smoke and desperation.
Acting
Bentley's photographer hero: sweaty, out-of-his-depth perfection.
Director
John Gilling
Trivia, insights & behind the scenes
Gilling directed four films in 1954 alone; this was his crime-movie warm-up before Hammer Horror stardom.
The ' chance photograph' trope peaked here, influencing everything from Blow-Up to modern smartphone thrillers.
US
