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. Sims and Maurus 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.
La película dedica su primera parte a analizar las posibilidades de realizar un viaje a la Luna con el fin de encontrar oro. En la segunda, se trata del viaje y de las sorpresas que deparará a los protagonistas.
El agente 326 de la Policía Estatal (Willy Fritsch) debe desbaratar una red de espionaje y detener a su cabecilla. El nº 326 desconoce que se trata del banquero Haghi (Rudolf Kein Rogge), quien trata por todos los medios de confundir al Servicio Secreto y neutralizar al nº 326 especialmente tras saber que su mejor espía, Sonja (Gerda Maurus), se ha enamorado del agente.
