GenreAction, Drama EditorsAlvin Todd, Ace Herman LanguageEnglish
DirectorLewis D. Collins
Ray Taylor WriterJack Natteford, Dwight V. Babcock, Joseph ODonnell, George H. Plympton, Ande Lamb Release date1945 DirectorsRay Taylor, Lewis D. Collins GenresAction Film, Spy film, Adventure Film, Black-and-white CastMilburn Stone (Agent Tom Brant), Jan Wiley (Janet Lowe), Dennis Moore (Jack Ryan), Addison Richards (Gerhard Doenitz / Garret Donahue), Byron Foulger (Prof. Elwood Henderson), Maris Wrixon (Dorothy Newton) Related Ray Taylor moviesMilburn Stone appears in The Master Key and The Royal Mounted Rides Again, Jungle Queen (1945), Milburn Stone appears in The Master Key and The Great Alaskan Mystery, Dennis Moore appears in The Master Key and Raiders of Ghost City, Winners of the West (1940)
Nazi spies, led by the mysterious "Master Key", kidnap Professor Henderson in order to acquire his "Orotron machine" which is capable of extracting gold from sea water. FBI agent Tom Brant, aided by reporter Janet Lowe and Detective Lt. Jack Ryan, attempt to rescue him and crack the Nazi spy ring.
Milburn Stone as FBI Agent Tom Brant
Jan Wiley as Janet Lowe, a reporter
Dennis Moore as Detective Lt. Jack Ryan
Addison Richards as Gerhard Doenitz, alias Garret Donahue, private investigator and Nazi agent
Byron Foulger as Professor Elwood Henderson
Maris Wrixon as Dorothy Newton
Sarah Padden as Aggie
George Lynn as Herman, the "Spearpoint Heavy" (chief henchman)
Russell Hicks as Police Chief Michael J. O'Brien
Roland Varno as Arnold "Hoff" Hoffman, alias M-3
Lash LaRue as Migsy, a street urchin. This was La Rue's screen debut.