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'.
First mate Knud Karlsen has just received sad news from his girlfriend. On board the ship is also chef Valdemar, sailor Ole, owner's confident son Robert and a whole bunch of eager sailors. On board develops the drama out every minute, culminating in the film's climax, when a fire breaks out on board
A tale of murder and marriage in 1625 Denmark.
