Time Out says
Impressively unusual thriller with typically simplistic Freudian elements as psychiatrist Ayres is called in by the police to help investigate a murder committed by one of two identical twins...but which one? Intriguing cat-and-mouse games and perverse power struggles as both he and we try to fathom which of the sisters is the warped psycho, with de Havilland (in the dual role) and Siodmak managing admirably to counteract the contrived plot. What really makes it work, though, is Siodmak's firm grasp of mood and suspense; the opening scene, in which the camera prowls a darkened room until it finds a corpse, sets the tone perfectly for the sense of uncertainty and chaos that follows.
Cast and crew
- Director:Robert Siodmak
- Screenwriter:Nunnally Johnson