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

Neighbor of the building

Notary