After a serial killer strangles several women with a necktie, London police identify a suspect—but he claims vehemently to be the wrong man.
| Directing | Alfred Hitchcock | Director |
| Writing | Arthur La Bern | Author |
| Writing | Anthony Shaffer | Screenplay |
| Production | William Hill | Producer |
| Production | Alfred Hitchcock | Producer |
| Sound | Ron Goodwin | Original Music Composer |
| Camera | Gilbert Taylor | Director of Photography |
| Editing | John Jympson | Editor |
| Production | Sally Nicholl | Casting |
| Art | Syd Cain | Production Design |
| Art | Robert W. Laing | Art Direction |
| Crew | Leonard J. South | Cinematography |
