The story of an egotistical crime writer who gets involved with the case of a notorious art thief (who is believed to be dead) while at the same time romancing a lovely young actress who's in a play that also happens to be the cover for massive jewel job. Art connoisseur and criminologist George Melville is hired to track down art thieves, assisted by perky Claire Peyton and goaded by Phil Bane, the roaring newspaper editor who has employed him. The mastermind poses as a theatrical impresario and stages a war drama, replete with loud explosions, to divert attention from his band of thieves, who are cracking safes in a bank adjacent to the theater.

Secretary Marilyn David falls in love with British aristocrat Charles Gray, to the dismay of her best friend, reporter Peter Dawes, who secretly loves her. When Peter learns that the already-engaged Charles has hurt Marilyn, he fabricates an article casting her as the "No Girl" who refused to marry a callous aristocrat. But when the publicity brings Marilyn unexpected fame, and Charles returns, she is forced to choose between the two men.

A viceroy, a nobleman and a bullfighter court a comedy-troupe actress in 18th-century Peru.