Acting
Honor Blackman steals every scene without breaking a sweat.
Direction
Peter Graham Scott squeezes maximum tension into minimum runtime.

Director
Peter Graham Scott
Trivia, insights & behind the scenes
Shot back-to-back with another quickie, The Steel Bayonet, using some of the same sets and crew.
Part of Britain's 1950s 'quota quickie' boom—cheap films made to satisfy legal requirements for British screen content.