Helsinki, March 1953. An unusually long and cold winter, everywhere frozen sea, ice-covered lakes and rivers. In a port city flooded with refugees, who cares if a young woman goes missing? An up-and-coming inspector who views this as an opportunity to advance his career. A heartbroken PI with a score to settle. They have yet to discover one thing: the most dangerous lies are those we tell ourselves.

It all begins when Nellie, a prostitute working in a high-end brothel is found floating upside down in Helsinki Harbour. Not exactly a high priority case for the Helsinki police, so homicide chief Jokela passes the job to his former colleague Hella. It's beginning to look like a serial killer is at work when Elena, another lady of the night, narrowly escapes being driven into the harbour by her 19-year-old john. Problem was he had handcuffed her in the car. And to add further excitement to Hella's life, the madam is soon found dead in the garden outside the brothel.