Victor Sjöström
Professor Isak Borg
Naima Wifstrand
Isak's Mother
Gunnel Broström
Mrs. Alman
Gertrud Fridh
Karin, Isak's Wife
Ann-Marie Wiman
Åkerman's Wife
Lena Bergman
Twin Kristina
Monica Ehrling
Twin Birgitta
Per Skogsberg
Hagbart (uncredited)
Helge Wulff
The Manager (uncredited)
Göran Lundquist
Benjamin (uncredited)
Peder Hellman
Sigbritt's Baby (uncredited)
Vendela Rudbäck
Elisabeth (uncredited)
Ulf Johansson
Isak's Father (uncredited)
Erik Nordgren
Conductor (uncredited)
Josef Norman
Professor Tiger (uncredited)
Gunnar Olsson
Bishop (uncredited)
Harry Asklund
(uncredited)