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Michael Whalen
Robert Norton
Anne Nagel
Nancy Fielding
William Bakewell
Tom Fielding
Constance Worth
Linda Pavlo
Hans Heinrich von Twardowski
Capt. Gemmler
Jack Mulhall
Chief Agent James Curtis
George Pembroke
Prof. Karl Schmidt
Kenneth Harlan
Agent Brown
Robert Frazer
John Oliver
Hans von Morhart
Heinrich
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Released
PRC
Merrick-Alexander Productions
Albert Herman
Director
Edward Linden
Director of Photography
Arthur St. Claire
Story
Screenplay
