The son of an Argentine chemist travels to Vienna, to solve the murder of his father. Step by step, he realizes that his father was internationally entangled in secret service machinations and chemical weapon sales, and ends up in mortal danger himself. Meanwhile, he also realizes that there is no connection between his father's murderess and those dubious activities. Her motive for killing him goes back much futher, to a court hearing during the Third Reich...

Actor becomes Hitler's valet, murders him, takes his place and ruins Nazi Germany's war efforts.

Vienna, 1956. After Soviet tanks crush the Hungarian uprising, soldier-of-fortune Michael Reynolds is hired to help a threatened Hungarian scientist escape from Budapest.