Si jeunesse savait...

Robert Moor as Doctor Pierre Sergeol as A bandit Robert Vattier as Lucien Bigne Sinoël as Gédéon Jacques Roussel as Shareholder Lucas Gridoux as Producer Grégoire Gromoff Jacqueline Plessis as Client Paul Azaïs as Paulo Pierre Juvenet as Bajaudel Suzet Maïs as Mathilde Vigne Jules Berry as Charles Vigne Jean Témerson as Fred Georges Vitray as Pons Saturnin Fabre as Abdul Jean Tissier as Gégène Franck Maurice Arlette Merry as Martine Jacques Tarride as Professor Max Dalban as 'P'tit Louis'