Pete Cheyney's gentleman sleuth continues - in the words of an unbilled Charles Hawtrey - "his private war against crime", taking in his stride attempts on his life by goons in the employ of an arch villain after the usual secret formula.
Valentine Dyall returns as Inspector Grice of the Yard along with Roddy Hughes as Jolly, Wally Patch as Bert and John Powe (who died before it was released) as Flatty. John Bentley in the lead, however, gets a new bright-eyed and bushy-tailed leading lady in the form of Patricia Dainton, whose uncle is played by Ian Fleming. (No! not that one!)