THE DARK MIRROR is a film directed by the German born director Robert Siodmak in 1946.
Dr. Peralta has just been found stabbed in his apartment. Lt. Stevenson is lucky enough to have two witnesses ready to testify that they saw Terry Collins with Peralta on the same evening. But when the policeman makes the acquaintance of the young woman, he also meets Ruth Collins, Terry's perfect twin sister. Both sisters say they don't have anything to do with Peralta's murder.
As Stevenson is unable to gather any proofs against one sister or the other, he asks Dr. Scott Elliott, a psychiatrist, to talk with the sisters and to try to find some evidence that could be used by the justice. Elliott convinces the sisters to pass psychological tests and falls in love with Ruth Collins. He also understands that her sister, Terry Collins, is a mad woman terribly jealous of her sister's successes with men. Now who's more in danger? Dr. Elliott who doesn't see that Terry has, like her sister, fallen in love with him or Ruth Collins who has once again seduced a man desired by her sister ?
The review of this Movie prepared by Daniel Staebler