A cabal of American industrialists, all fifth-columnists intent on sabotaging the war effort, are methodically murdered by the malevolent Monsieur Colomb. It is only until detective Dick Martin is assigned to the case that everyone's true motives and identities are revealed.
Directed By
William NighWritten By
Harvey Gates, Robert KehoeStudio
Banner Productions, Monogram PicturesCast of Black Dragons
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