Police Lt. Leonard Diamond is on a personal crusade to bring down sadistic gangster Mr. Brown. He's also dangerously obsessed with Brown's girlfriend, the suicidal Susan Lowell. His main objective as a detective is to uncover what happened to a woman called "Alicia" from the crime boss's past.
Margo Lorenz plays the newly married Martha Jorgensen, who is sat in her Copenhagen hotel room waiting for her husband, Jorgen, to return. She receives a visit from the mysterious Mr. Rasmusson (Douglas Wilmer), who claims to have been a "comrade" of her husband during World War II. He asks her not to tell her husband he is there if he should call.
After being badly wounded during a heist, bankrobber Charlie Blake (Wilde) takes refuge in a remote New England farm house owned by his older brother Fred (Duryea). Fred reluctantly harbors the fugitive and his two gang members. Time passes and Charlie's men are anxious to move on, but he needs rest to recover. He is also still in love with Freds wife Elizabeth (Wallace) with whom he once had an affair. More trouble ensues when it is revealed that the Elizabeth's son was fathered by Charlie, not her husband.
Alors qu'il fait route vers Cayenne où il doit rejoindre le bagne, Chéri Bibi, un forçat condamné pour un crime qu'il n'a pas commis, prend la tête d'une mutinerie. Désormais seul maître à bord, il recueille un naufragé, Maxime du Touchais. Ignorant tout d'abord que ce dernier est le mari de Cecily, dont il est épris, il met ensuite à profit cette opportunité avec un machiavélisme rare. Aidé par le Kanak, un ancien chirurgien, il se fait greffer le visage de Maxime, qui succombe lors de l'opération, et rentre en France séduire Cecily. Or celle-ci n'aime pas son mari et le lui rappelle vertement.
Tony Wendice (Ray Milland), an ex-professional tennis player, lives in a ground floor flat with his socialite wife, Margot (Grace Kelly). Tony retired after Margot complained about his busy schedule and she began an affair with American crime-fiction writer Mark Halliday (Robert Cummings), which Tony secretly discovered. Tony devises a plan to have Margot murdered.
Irene Wagner (Bergman), the wife of prominent German scientist Professor Albert Wagner (Wieman), had been having an affair with Erich Baumann (Kreuger). She does not disclose this to her husband, hoping to preserve his innocence and their "perfect marriage". This fills her with anxiety and guilt. However, Johann Schultze (Mannhardt), Erich's jealous ex-girlfriend, learns about the affair and begins to blackmail Irene, turning Irene's psychological torture into a harsh reality. When Irene finds out that the extortion plot is truly an experiment in fear, she is driven into a homicidal/suicidal rage. But she is saved from suicide by her husband at the last minute, both sorry for what they did.
Railroad supervisor Carl Buckley (Broderick Crawford) gets fired from his job. He persuades his seductive wife to pay a visit to an important railroad customer in order to try to get his job back. When Buckley suspects that his sexy, younger wife Vicki (Gloria Grahame) has done more than just talk with the rich old magnate John Owens (Grandon Rhodes), he smacks her around. He then jealously stalks his rival, finally stabbing him to death in a train compartment. Locomotive engineer and Korean War vet, Jeff Warren (Glenn Ford) observed Vicki in the vicinity of the murder, but shields her at the inquest, as she sets his pulse racing. The two begin an affair which is hard to keep quiet in such a small town. Vicki then starts scheming for Warren to kill her increasingly drunk and violent husband.
In Honolulu, a DC-4 airliner prepares to take off for San Francisco with 17 passengers and a crew of 5. Former captain Dan Roman (John Wayne), the flight's veteran first officer known for his habit of whistling, is haunted by a crash that killed his wife and son and left him with a permanent limp. The captain, Sullivan (Robert Stack), suffers from a secret fear of responsibility after logging thousands of hours looking after the lives of passengers and crew. Young second officer Hobie Wheeler (William Campbell) and veteran navigator Lenny Wilby (Wally Brown) are contrasts in age and experience. Stewardess Spalding (Doe Avedon) attends her passengers, each with varying personal problems, including jaded former actress May Holst (Claire Trevor), unhappily married heiress Lydia Rice (Laraine Day), aging beauty queen Sally McKee (Jan Sterling) and cheerful vacationer Ed Joseph (Phil Harris). Spalding befriends the terminally ill Frank Briscoe (Paul Fix) after being charmed by his pocket watch. A last-minute arrival, Humphrey Agnew (Sidney Blackmer), causes the crew concern with his strange behavior.
After breaking his leg photographing a racetrack accident, professional photographer L. B. "Jeff" Jefferies (James Stewart) is confined to his Greenwich Village apartment, using a wheelchair while he recuperates. His rear window looks out onto a small courtyard and several other apartments. During a summer heat wave, he passes the time by watching his neighbors, who keep their windows open to stay cool. The tenants he can see include a dancer he nicknames "Miss Torso", a lonely woman he nicknames "Miss Lonelyhearts", a composer-pianist, several married couples, a middle-aged sculptor, and Lars Thorwald (Raymond Burr), a traveling jewelry salesman with a bedridden wife.