Universal's 64th of 69 sound-era serials (between "Jungle Queen" with Ruth Roman and their 2nd version of "Secret Agent X-9" with Lloyd Bridges), is set in 1938 with Nazi agents kidnapping scientist Professor Ellwood Henderson in order to get his Orotron machine that can extract gold from seawater. Operating under the secret leadership of "The Master Key", with the operatives headed by a German agent posing as a private investigator named Garrett Donovan, the gang is trailed by Federal agent Tom Brant, aided by police detective Lieutenant Jack Ryan and newspaper reporter Janet Lowe. Also aiding in the quest is Police Chief William J. O'Brien and his secretary Dorothy Arnold. It takes Brant nearly 12 of the 13 episodes to figure out that since the Nazis learn of his and Ryan's plans almost before they clear police headquarters, then "The Master Key" must be somebody close to them. Most of the leg-work is done by a group of boys under the leadership of candy-notions store owner Aggie ... Written by
Les Adams <email@example.com>
Elwood Henderson invents the Orotron, a large device which can extract various minerals and elements in their minute quantities from sea water. Nazi agents (the serial, released in 1945, is set in 1938) plan to use the Orotron in order to obtain enough gold to buy up key American industries for their own use and purpose. Henderson is also taken prisoner by the Nazis, since he has to manufacture the gas tubes in order to make the Orotron work, when the present ones wear out. Government agent Tom Brant, police detective Jack Ryan, and reporter Janet Lowe, team up to find Henderson and round up the agents responsible for his and the Orotron's disappearance, including the Master Key, the unknown head agent of the Nazis in the US. Very good script overcome some of the weak fights in the serial. Many of the cliffhangers are so-so, and at times just look like the writers put them in there from making the chapters run a reel extra. Stone, Moore, & Wiley are all believable as Brant, Ryan, and Lowe respectively. Addison is very villainous Donohue, second Nazi in command. LaRue is as good as he every would be as the leader of Lowe's teenage reporter friends, but Fougler has one of his better roles as Henderson. Great ending to the serial, one of the few that respects the intelligence of the viewer. Rating, based on serials, 8.
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