London has become enthralled by the antics of the contemporary Robin Hood, but when a band of bad guys start framing him for their misdeeds, the hero has to catch the criminals and clear his name.

Ed Harwood, a wisecracking private investigator from New York, discovers a crime at a hotel in Nice during a carnival. The unraveling of the mystery which lies behind will lead him and Caryl Fenton, a female insurance agent, who will become his companion, first to Paris, then to London, later through the English countryside and finally to Southampton, in search of a criminal train wrecker.