Lieutenant Varnière, responsible for discovering the cause of the death of two officers in Algeria, unmasks the assassin in the person of a Russian who lives with three women. He falls in love with one of them and runs away with her while the Russian is killed by a devoted servant.

Jean Toulout
as Warneskine

Kaissa Robba
as Gritcha

Jean Worms
as Le commandant Saint-Hallier

Tahar Hannache
as Mohamed

Alexandre Mihalesco
as Haïoub

Suzanne Christy
as Sandra

Jean Heuzé
as Le lieutenant Varnière

Louis Zellas
as Igor

Paul Achard
as Le cuisinier

Jacques Gautier
as Prémelle