On a chilly autumn night, a bloody murder took place on the family estate of an ancient count family. Jerre Petersson, a millionaire and successful lawyer, who had recently bought the castle from its noble owners, died. Yerre was found in the castle moat with many stab wounds on his body. The investigation team, which includes Malin Fors, is entrusted with solving the crime. Suspicion falls primarily on the former owners of the estate - after all, the arrogant aristocrats never hid the fact that they treated the upstart Petersson with contempt, and the castle was sold out of extreme necessity. Could the count and his children take such cruel revenge for their violated honor? In search of an answer to this question, Malin unearths an old family secret that connects people who seem to be complete strangers to each other. And makes the heart go cold with fear...