Obsada:
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Boris Karloff
Mr. James Lee Wong
-
Grant Withers
Captain Sam Street
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Maxine Jennings
Dayton's Secretary Myra Ross
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Evelyn Brent
Olga Petroff / Countess Dubois / Sophie Dome
-
George Lloyd
Detective Lt. Devlin
-
Lucien Prival
aka Baron Von Krantz Anton Mohl
-
John St. Polis
Poison Gas Inventor Carl Roemer
-
William Gould
Dayton's Partner Theodore Meisel
-
Hooper Atchley
Dayton's Partner Christian Wilk
-
John Hamilton
President Dayton Chemical Co. Simon Dayton
-
Wilbur Mack
Dayton's Office Manager Russell
-
Lee Tung Foo
Wong's Servant Tchin
-
Lynton Brent
Detective Tommy
-
Grace Wood
Mrs. Carl Roemer
-
Frank Bruno
Mohl's Henchman Lescardi
-
Ed Cassidy
Ambulance Doctor
-
Wheaton Chambers
Chemistry Lab Director
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Clancy Cooper
Warehouse Man
-
Lester Dorr
Coroner
-
Herbert Evans
Mr. Wilk's Butler
-
Dick Reinhart
Dock Worker
