The film marked the first appearance of both Peter Gawthorne and Charles Hawtrey in a Will Hay film, both of whom would go onto act as straight men to Hay in his future films.
Plot
Will Hay plays the roguish headmaster, Dr Twist, of a dubious boarding school for boys. Twist bets on the horses with his pupils and teaches them little. Colonel Willoughby-Gore attempts to sack the incompetent Twist but is foiled when he and his boys, after fraudulently gaining resounding success in a French examination, are invited to Paris by the French ministry of education.
In Paris they become involved with a gang of criminals, including escaped convict Arty Jones, father of one of the boys, and Yvette, a night club singer, who are attempting to steal the Mona Lisa from the Louvre and replace it with a duplicate.
Allmovie wrote, "the magnificent Will Hay re-creates his vaudeville characterization of a supercilious schoolmaster...But the inimitable, toothless Moore Marriott (aka "Harbottle") is conspicuous by his absence."[2]