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...
Alain Noury
as Manuel Aranda
Horst Tappert
as Rechtsanwalt Forster
Konrad Georg
as Martin Landau
Horst Frank
as Flemming
Ruth Leuwerik
as Valerie Steinfeld
Judy Winter
as Nora Hill
Doris Kunstmann
as Irene Waldegg
Heinz Moog
as Hofrat Groll
Eva Zilcher
as Tilly Landau
Heinz Baumann
as Grant