"The adventures of the famous Joseph Rouletabille, an adventurous young journalist, gone to solve a murder in the south of France. He puts an end to the conflict between two rival bands for the possession of a revolutionary metal, belenium."
Jean Piat
as Joseph Rouletabille
Suzanne Dehelly
as Florine
Marie Déa
as Wanda
Jérôme Goulven
as Éric
Lucas Gridoux
as Professor Sadjeck
Claire Guibert
as
Léo Lapara
as Ambassador
Yette Lucas
Ariane Murator
Monique Mélinand
as Lisette
Claude Nicot
as Fifrelin
Véra Norman
Roger Vincent
as Doctor
Michel Vitold
as Arnauld
Gaston Leroux
Story
Pierre Lestringuez
Writer
Christian Chamborant
Director