Lev farligt

Lauritz Falk

as Iben Holt

Irma Christenson

as Inger Berg

Elof Ahrle

as Rödluvan

Stig Järrel

as Otto Frank

Gunnar Björnstrand

as Dr. Hahn

Marianne Aminoff

as Marion

Ernst Eklund

as Professor Fors

Torsten Winge

as Jacob

Börje Mellvig

as Dr. Fritz Lenner

Rune Halvarsson

as Johnny

Olle Hilding

as Olof

Helge Mauritz

as lokföraren

Erik Hell

as Parachute Saboteur

Erik Strandmark

as Corporal

Stig Olin

as Parachute Saboteur

Gabriel Rosén

as officer i ockupationsmakten

Birger Sahlberg

as rörmokare Gustav W. Tobiasson

Olle Janson

as en av Ibens vänner på restaurangen

Mimi Nelson

as Girl at Bar

Helge Andersson

as vaktmästare hos professor Fors

Gösta Holmström

as ockupationssoldat vid järnvägsstationen