Jacques Pills
Jean Sestrières, nephew of the Professor
Luce Feyrer
Lola Bonheur, a star
Armand Bernard
Monsieur Calchas, private detective
Danielle Godet
Monique Calchas, his daughter
Paul Demange
Stanislas, the professor's assistant
Al Cabrol
Self, as a wrestler
Robert Seller
Professor Sestrières
Michel Dancourt
Flower deliveryman
Jacques Josselin
Menotti, gang boss
Rivers Cadet
Auguste, swiss waiter
Émile Riandreys
Oscar, alcoolic deliveryman
Andrès
A waiter in Piaf's cabaret
Andréa Parisy
A presentator of "Boum" perfume