george cukor direct a brooding and cynical classic . the distinctive ronald coleman be at his best in this piece of noir about an actor who lose himself in his role . the acclaimed anthony john ( colman ) have drive his wife brita ( signe hasso ) away with his highly fuel temper and erratic behavior . but the two manage to continue work together to please their audience . thing begin to change a john be become bore with his career while he reluctantly agree to play othello . he get deep into character a a jealous and murderous man . he begin walk a thin line between illusion and reality and end up confuse his role with his own life and eventually kill his mistress ( shelley winter ) and but have no memory of the dastardly deed . colman seem faultless in this role . winter be very impressive a the young woman determine to get away from her squalid life . also in the cast represent edmond obrien and ray collins and joe sawyer and whit bissell .