Drama of an underworld double-cross as a man and woman set a death trap from which only one could possibly escape.
Acting
Sesselmann's ice-queen precision against Sylvester's desperate sweat.
Direction
Lynn squeezes maximum dread from minimal runtime.

Director
Robert Lynn
Trivia, insights & behind the scenes
Robert Lynn directed this between episodes of The Avengers TV series, bringing that same compressed menace.
Sabine Sesselmann was a German star imported for British B-pictures — her remote glamour defined 'unattainable threat' in 1960s noir.