A woman is found strangled in her shop. Shortly after, another murder is committed. Perhaps the most terrifying is that the both girls' name is Sonja. The police is convinced it's the same killer and at each scene is heard a woman singing the same song. A song which is soon dubbed the 'murder melody'.
Gull-Maj Norin
Poul Reichhardt
Angelo Bruun
Else Petersen
Ib Schønberg
Peter Nielsen
Karen Poulsen
Petrine Sonne
Charles Wilken
Per Buckhøj
John Pio
Anna Henriques-Nielsen
Lili Heglund
Tove Grandjean
Gudrun Ringheim
Tove Boëtius
Tove Schultz
Helga Frier
Lis Løwert
Peter S. Andersen
Mogens Brandt
Poul Guldager
Poul Jørgen Hansen
Aage Redal
Valsø Holm
Ingeborg Pehrson
Alma Olander Dam Willumsen
Aage Foss
Miskow Makwarth
Arne Westermann