Marie, the daughter of Emile De Severac, a novelist, is home from the convent. She is betrothed to George Renoir, an artist friend of her father, who is devotedly in love with her. Marie has suddenly developed flirtatious symptoms and to warn and guard her against the trouble she is likely to create for herself and others, unless she ceases her folly, De Severac tells her the p...
One of the last bills signed by President Lincoln authorizes pushing the Union Pacific Railroad across the wilderness to California. But financial opportunist Asa Barrows hopes to profit from obstructing it. Chief troubleshooter Jeff Butler has his hands full fighting Barrows' agent, gambler Sid Campeau; Campeau's partner Dick Allen is Jeff's war buddy and rival suitor for engi...
1865年,总统林肯遭到刺杀,杀手布斯(弗朗西斯·麦克唐纳 Francis McDonald 饰)在逃跑的过程中摔伤了腿,闯进了乡村医生塞缪尔(沃纳·巴克斯特 Warner Baxter 饰)的家中。善良的塞缪尔接纳了布斯,还帮他疗伤,哪知道布斯临走之前将自己的靴子偷偷留在了塞缪尔家中,第二天,警察登门,将这只靴子作为证据,一口咬定塞缪尔就是刺杀总统的帮凶。
就这样,塞缪尔锒铛入狱,面临着终身监禁的重刑,他被关进了大名鼎鼎的鲨鱼岛监狱,这座监狱建造在孤岛之上,为了防止犯人越狱,监狱周围的水域中养满了鲨鱼。塞缪尔是被临时军事法庭定罪的,这也就意味着布斯依然拥有被无罪释放的可能。但重新审判是有条件的,那就是布斯必须从鲨鱼岛监狱中逃出来。
二战刚刚结束,莉亚(英格丽·褒曼 Ingrid Bergman饰)作为战犯的女儿被美国联邦调查局相中,利用她对父亲罪恶的负疚和其父在纳粹阵营内的关系网络,深入调查纳粹首脑契巴斯(克劳德·雷恩斯Claude Rains饰),获得情报将其定罪。联邦调查员迪奥(加里·格兰特Cary Grant饰)在与莉亚合作的过程中,深深爱上这个迷人的姑娘。然而二人感情还是要服从国家利益,因此他将私情搁置一边,忍痛让莉亚成为契巴斯身边的女人。莉亚深深失望的同时,也在契巴斯的生活中充当了间谍的角色,处于危机四伏的环境当中。
等到莉亚终于发现了契巴斯的关键情报,不料却被契巴斯发现了自己的真实身份。然而,契巴斯也有自己投鼠忌器的顾虑,为了置莉亚于死地,契巴斯设计了一个不动声色的计谋。莉亚境况堪忧,间谍计划悬念重重。