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Summer and Sinners is a 1960 Swedish comedy film directed by Arne Mattsson and starring Karl-Arne Holmsten, Elsa Prawitz and Yvonne Lombard. The film's sets were designed by the art director Bibi Lindström. It was shot in Eastmancolor. The film was very poorly received, and even some of its own cast members were publicly critical. This marked a turning point in the previously high regard in which Mattsson's films were held.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.