It’s interesting to consider if Cary Grant delivers a performance as subtly threatening as anything he’s done before. The narrative isn’t groundbreaking; it resembles a combination of "Gaslight" and "Rebecca," centering on a timid young woman, “Lina” (Joan Fontaine), who quickly falls for the charming “Johnnie” (Grant), leading to a hasty marriage. When his acquaintance, "Gordon" (Nigel Bruce), comes to visit, inconsistencies start to surface regarding her husband’s past. A deeper look reveals that he's quite comfortable with deception, and after some difficulties in their relationship and Lina finds a letter from their insurance company indicating he was attempting to secure funds based on her life insurance policy, she becomes concerned for her safety. Hitchcock’s direction—at times the camera angles create the impression of voyeurism—and Franz Waxman's suspenseful music significantly enhance this story that focuses heavily on its characters. Bruce is memorable as the friendly man Lina develops an affection for; Fontaine manages to portray a delicate balance between sanity and suspicion with notable talent, but Grant truly distinguishes himself. He’s appealing, believable, and those familiar with Anthony Berkeley’s lengthy novel "Before the Fact" will recognize that his depiction captures the essence of the source material—the question arises whether we should trust him, or if we even want to—and ultimately, it's just a superb film; definitely worth seeing.

Source on TMDB