The Happy Canary
Actress Brio working in a cafe "The Happy Canary", does not suspect that her new acquaintances Brianski and Lugovec are Communists sent by an underground committee to fight the enemy's counter-intelligence.

Mademoiselle Brio, variety show artist

Lugovets

Lugovets's wife
Bryanskiy, underground Bolshevik

Adjutant for the chief of secret intelligence
Chief of secret counterintelligence
French Bolshevik soldier

Illusionist

Worker

(uncredited)