Overview
The means used by foreign spy services to obtain the trade secret of a French invention.
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Top Billed Cast
Claude Rollet
Yves Rubin
Danielle Godet
Sonia
Paul Préboist
Léon Prades
Jacques Galland
Robert Alexandre
Henri Lambert
Dabillaud
Daniel Prévost
Mario
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Michèle Chemin
Janine
Christine Aurel
Irène
Dennis Berry
Jean-Marc
André Rouyer
Pierre
Jean Rupert
The man on the train
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Jean Perrin
The representative
