In a small town a bag with delicate letters disappears. Many of the residents are worried about their written messages. A clever sculptor uses the opportunity to play a prank.

Rich American Dina Morris and her New York friends sail through the Indian Ocean on a yacht. When the ship suffers a machine damage near the coast, it is decided to go ashore.

When Albers takes his drug-addicted opera star sister Gerda to a sanitarium, they both become targets of slimy dope peddler Peter Lorre, who fears that Gerda will blow the whistle on him. Lorre kidnaps the woman, leading Albers on a frantic chase.

Harbour policeman Hans and his companion rescue a young woman from water during their night watch, to find out she is connected with a jewel robbery in which a gangster now owner of an hippodrome, an out jailed one and his mistress now mixed up with an American millionaire weave some obscure plans.

When both husband and wife find romance outside their marriage, it's a shock to everyone. Robert and Annemarie break up to elope with their respective lovers, only to be thrown together again when they show up at the justice of the peace.

A dedicated editor, who is engaged to the daughter of a wealthy senator thrills her father with a lecture about convictions based on circumstantial evidence. When a corpse with a disfigured face is found in the house of the senator, evidence points to the editor. An entertaining thriller with a fairly intricate plot and some critical comments on the practice of the law. Based on the novel "Der geschlossene Ring" by Frank Arnau.

During the shooting of a jealousy scene on a soundstage, one actress is murdered. Due to the fact that the male star of the movie had a relation with the victim and the female star is now his fiance, he is suspected by the police.

A scientist discovers that there's gold on the moon. He builds a rocket to fly there, but there's too much rivalry among the crew to have a successful expedition.

The mastermind behind a ubiquitous spy operation learns of a dangerous romance between a Russian lady in his employ and a dashing agent from the government's secret service.