A gang of criminals murder a scientist, steal plans for a "radio-controlled torpedo" and have them tattooed in invisible ink on the back of a woman named Rita, planning to sell them to the highest bidder. Paul Baker then murders the tattooer. Rita is to take the place of reporter Sidney Royce (Paulette Goddard) on an airplane bound for Lisbon. Baker has informed the British and the Nazis to contact "Sidney" there for the auction. Joe Scalsi is given the task of making sure that Sidney does not board the plane, but he is taken into custody by government agents. Rita witnesses this.
Meanwhile, the real Sidney Royce is being sent to Lisbon to work for the very demanding Kenneth Harper, who has fired the last four reporters. They were all men, so Mr. Weston decides to try sending a woman instead.
Bosley Crowther panned the film in his New York Times review, calling it a "silly fable, without rhyme or reason" and a "thoroughly implausible tale".[2]