Two boys are helping the border guards to find a mysterious moor hound used by spies to transfer messages across the border.

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Main Cast: Günther Simon, Horst Kube, Rolf Ripperger, Dieter Perlwitz, Peter Sturm, Elfriede Florin, Wolfgang Glaser, Klaus Urban, Lotte Loebinger, Maika Joseph

Director: Konrad Petzold

Writers: Konrad Petzold, Signe Thiessen

Editor: Ilse Peters

Cinematographer: Otto Merz

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