Invisible Enemy Jeffrey Clavering is hired in London by The Great Eastern Oil Corporation to go to Paris to prevent unscrupulous industrialist Nikolai Kamarov from gaining control of their oil fields and turning them over to a foreign power. Details Casts Videos Galleries Posters Title Invisible Enemy Release Date 1938-04-03 Runtime 01 Hours 06 Minutes Genres Crime Drama Production Companies Republic Pictures Production Countries United States of America Alan Marshal... Jeffrey Clavering... Tala Birell... Sandra Kamarov... Mady Correll... Princess Stephanie... C. Henry Gordon... Nikolai Kamarov... Herbert Mundin... Sergeant Alfred M. Higgs... Gerald Oliver Smith... Bassett... Ivan F. Simpson... Michael (as Ivan Simpson)... Elsa Buchanan... Sophia... Dwight Frye... Alex... Leonard Willey... Sir Herbert Donbridge... Ian Maclaren... Sir Joshua Longstreet... Egon Brecher... Kirman... Frank Puglia... Signor Bramucci... Sidney Bracey... Kamarov's Butler... Lawrence Grant... Foreign Diplomat... Keith Hitchcock... Secondary Supporting Role... Paul Sutton... Chauffeur... Wilhelm von Brincken... Foreign Diplomat... Invisible Enemy 1938: Dwight Frye As Alex. (Clip) Original Size (1280x720) Original Size (500x750)