A mad doctor uses patients at his isolated psychiatric institute as subjects in his attempts to create longevity by surgically installing an artificial gland in their skulls.
The old and sick detective superintendent Bärlach has to investigate the murder of his colleague Ulrich Schmied, who was murdered in the middle of the country road.
The only son of Otari’s widow decides to serve in the serf owner’s house, and falls in love with the patron’s daughter for whom he can’t reveal his feelings to.
The defense and the prosecution have rested and the jury is filing into the jury room to decide if a young Spanish-American is guilty or innocent of murdering his father.