Assassin is a 1973 British thriller film directed by Peter Crane and starring Ian Hendry, Edward Judd and Frank Windsor.

When the time comes for him to kill Stacy, at the wedding of his colleague Craig, MI5 learn that Stacey is not guilty, but it is too late to contact the assassin and call him off, so two MI5 officers are sent to stop him.

The Monthly Film Bulletin wrote: "Assassin is distinguished chiefly by the amount of heavy, jazzy style Peter Crane manages to cram into it: pointless overhead shots, angles, distortions, even a heartbeat on the soundtrack to herald the nightmare which (naturally) haunts the disillusioned killer.

Instead, director Peter Crane piles on the flashy visuals in an attempt to turn a humdrum espionage caper into a meaningful tract on the state's dispassionate sanctioning of murder and the isolation of the professional killer.

"[5] Leslie Halliwell said: "Old hat espionage melodrama, topheavy with artiness which makes it look like an endless TV commercial.