Per-Axel Helge Branner (né Larsson; 25 January 1899 – 31 July 1975) was a Swedish actor, screenwriter and film director.
The famous author Mark Storm's publisher is unhappy with his books and asks him to write books in a more popular genre, crime for example. When Mark Storm comes to his apartment, he finds a burglar, Kurre. He notices that they have a physical similarity and they change identity, which makes it possible for Storm to make empirical studies in the world of crime.
Martin and Märta live in a seemingly happy marriage, but Märta feels neglected. One evening she meets Martine's colleague, the Frenchman Barthou, famous for his success with the Stockholm ladies. He starts to flirt with Märta.
The labor movement's emerging in Sweden. Welfare evolving. A young couple rents a modern apartment.