A brilliant swindler, Olivier Parker, hires a small-time pipe salesman, Amédée, to swindle a naive provincial, Ferdinand Galiveau, a chicken merchant. Renamed Teddy Morton and now a jockey, Amédée must ride a mare on which Ferdinand, advised by Parker, must bet. Absolutely convinced of his mystification, Parker bets on an oddball who, of course, loses, while at the last minute Galiveau, having bet on an outsider, wins a fortune. All Parker has to do is find another sucker.
Louis de Funès
Le père Graziani, faux religieux ; Prosper le faux garçon d'écurie ; le faux colonel Luc de La Frapinière
Fernand Gravey
Olivier Parker, le faux entraîneur hippique, escroc
Jean Richard
Ferdinand Galiveau, marchand de volailles et turfiste
Jacques Duby
Amédée Lucas / Teddy Morton
Darry Cowl
Le réceptionniste de l'hôtel Lutécia
