The novelist Suzanne Delmont creates a character, "The Uncatcable Frédéric", a sort of Arsène Lupin. A mysterious stranger launches a press campaign accusing him of having a harmful influence on young people...

Renée Saint-Cyr
Solange Delmont

Pierre Bertin
Granier

Jeanne Fusier-Gir
Justine

Pierre Palau
Petithunier

Henri Vilbert
Policeman

Annette Poivre
Martine

Paul Faivre
Publisher

Richard Francœur
Robert Clermont
Expert
René Alié
Roger Bontemps
Arsenio Freignac
Henry Murray

Denise Grey
Miss Baxter

Paul Meurisse
B.B. / Richard Fernay