Leon needs to make a business deal with Mr. Marshall but can't unless his son and Marshall's daughter straighten out their romantic problems. Leon, probably based on his own past history and the assumption that an apple never falls far from the tree, suspects that his son is playing around with the girl in room 303. His investigation reveals that his son isn't, but the girl's boy friend thinks Leon is.
A young bullfighter full of illusions triumphs in Mexico and decides to get married there and forget about his old Spanish girlfriend, who by then has just given birth to his son.
The owner of a cosmetics factory has made a contract with Radio Sibilla for the transmission of an evening program in which the products of his company are advertised.
After the discovery of two murders, Commissioner Chabrier, of the French secret services, is investigating the disappearance of plans affecting the national defense of the country robbed by a gang of international spies.
Stevie Carson, a newspaper reporter, and Danny Butler, the "morgue" manager on the same newspaper, set out to track down the killer of a colleague, a book-reviewer who was involved with a group of rare book forgers and whose sister has been convinced her editor-fiance, Bill Monroe, killed him.
The third of the Monogram series based on Ham Fisher's "Joe Palooka" comic strip, opens with Knobby Walsh, the manager of Joe Palooka trying to talk his way out of a traffic citation, and the story leading to that point is told in flashback as narrated by Walsh.
