A house in Paris happens to have two families living there with the same last name. In one apartment lives opera singer Gambetta Duval with his two daughters, Jeanne and Nita. In the second apartment lives old lady Duval with her grandchild Philippa and an her lodger, the physician Leon Monnier. Jeanne is secretly in love with Dr. Monnier who is secretly in love with Nita, who is secretly having an affair with the great playwright Armand de Marny.

Margit Manstad
Nita Duval

Ruth Weyher
Jeanne Duval

Alexander Murski
Napoleon Gambetta Duval

Fred Louis Lerch
Dr. Leon Monnier

Miles Mander
Armand de Marny

Margita Alfvén
Ms. Savelly, Actress

Karin Swanström
Rose Duval

Norah Baring
Jeanne Weiß

Hans Junkermann
Count Rochefort

Georg Blomstedt
Pinet, Theater Director
Alexandra Nalder
Philippa

Ragnar Arvedson
Actor in the play "Pistols for Two"

Olav Riégo
Actor in the play "Pistols for Two"

Albert Paulig
Duval's gatekeeper