Casts
Olof Bergström
as Gustaf Dalén
Eva Stiberg
as Elma Persson / Elma Dalén
Gunnar Björnstrand
as Henrik Kugelström
Kolbjörn Knudsen
as Anders Johansson
Erik Strandmark
as Mellander
Gunnar Sjöberg
as Gustaf De Laval
Åke Claesson
as Professor Wijkander
Märta Arbin
as Lovisa Johansson
Carl Ström
as Höjer
Hans Strååt
as Albin Dalén
