Fourteen-year-old Jan and his companion Erling appear as extras in a film being filmed at Nordisk Film's studios in Valby. A mysterious burglary at the studio's fine mechanics workshop gives the two healthy boys the opportunity to act as detectives.

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Main Cast: Henrik Huld, Ib Lundtoft, Mimi Heinrich, Gabriel Axel, Bent Christensen, Paul Hagen, Ib Schønberg, Asbjørn Andersen, Axel Strøbye, Inger Stender

Directors: Torben Anton Svendsen, John Hilbard

Writer: John Hilbard

Editor:

Cinematographer:

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