Robert Langlois, law student
Fernand Langlois, father, professor
Gabrielle Langlois, mother
Catherine Liseray, young neighbor
Mr. Calomel, neighbor on the floor above
Street violinist
Marie-Louise, first maid
Madeleine Sautaupain, Mom's friend
Léon “Alibi”, friend of Robert
Student of Mr. Langlois
Neighborhood butcher
Nicole
Germaine, secretary
Little Sylvie
Maid
Second comrade
Prompter at the performance
Acting
Neighbor of the building
Notary
Amateur
Gaston, neighbor on the sixth floor, under the roofs
Maître Pillat, of the council of the bar association
Little Sylvie (uncredited)
