Adolf Jahr

as Allan Linde / Fritjof Karlsson

Karin Nordgren

as Sonja Brink

Gösta Cederlund

as Carlos Haller

Marianne Aminoff

as Madeleine Haller

Stig Järrel

as Professor Petréus

Carl Hagman

as B.Å.G. Jansson

Einar Axelsson

as Film director Tallén