Franz finds Greta in a Berlin cabaret and helps her escape from Engel. She later confesses that she once betrayed him by trying to sell information about Johann, who was collaborating with the Soviets. In Gotenhafen, the SS begins investigating, and Eva provides Franz with an alibi. Franz and Eva set a trap for Johann, giving him false information about the smuggling of documents.

Lieutenant Franz Neumann discovers that Eva is missing. Stromberg was kidnapped by a fanatical Nazi Wulf, who wants to extract key information from her. Franz blackmails his superior, Bergman, to find her.