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.'
Odette Margot / Sonja
Max Stenberg
Louis Valdini
Mrs. Baunsø
Teaterdirektør Perm
Assistant Detective Baunsø
Flora Kristiansen
Sonja Bohman
Boarding House Host
Markussen
Sonja Neie
Lise Rasmussen
