French Secret Service agent and boxer Henri D'Alour uncovers a plot to con the government out of millions of francs in its purchase of machinery.

Miriam Monroe and John Conrad are two young scientific workers who, independently of each other, have discovered a chemical called exonite. Miriam...

Unknown to Judith Ralston, her brother Budd and his wife Vera are counterfeiters. In order to escape Fayban, a secret service agent, they leave...