Oliviero is a burned-out writer, living at his estate near Venice, his dead mother dominating his imagination. He is also a degenerate: sleeps with his maid and his ex-student, hosts Bacchanalia for local hippies, and humiliates his wife Irina in front of strangers. She lives in terror. When a young woman is murdered, …

故事讲述了商人伯莫死亡，推测他的死因是由于飞机失事，他的妻子丽萨因此发财。保险公司开始对此事进行调查的时候，他们开始怀疑丽萨。他们派出调查员彼得去确定丽萨说的是否属实。后来丽萨死亡，保险金不见，一个又一个的人因此受害，大家将会看到调查员彼得将如何完成自己的任务。

意大利的黑暗世界充满政治阴谋。情报专员丹堤调查一宗离奇的将领谋杀案，唯一的线索是一张《至尊牌》。丹提发觉此阴谋牵涉政府高层，而他须要《至尊牌》的协助，缉拿凶徙归案……