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...

A teenager named Kurrat mysteriously disappears from a German boys' school. Then a teacher is found dead; the mystery grows.

An FBI agent is killed by the mob after making off with five million in gold bars in a robbery gone bad. Agent Jerry Cotton is called in to bring the gang to justice and find out where his dead pal hid the missing gold.

Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas.