Foreign spies are interested in plans for a device invented by a French aviator. They kidnap the young man but fail in their business thanks to the energy of his wife and the cunning of the mechanic.
Jean Érard
Inspector
Louis-Jacques Boucot
'Pied de Vigne'
Suzy Vernon
Madeleine Violey
Jacques Varennes
Pierre Violey
Madeleine Guitty
Mother Camus
Camille Bert
Denouls
Janine Merrey
Marinette
Charles Barrois
Mareuil
Pierre Miquel
Director
