The naked body of a middle-aged stranger is discovered in the bath in a London architect's flat. It is Sir Reuben Levy, the well-known financier, who has recently disappeared? Is it a tramp dragged from the dissecting rooms of St Luke's Hospital?
Criminal investigating officer Hanne Wilhelmsen considers the possibility of a serial killer as she tracks down a series of numbers written in blood appearing on walls all over Oslo.
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