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A series of mysterious murders take place in the plots of the thrillers by the famous writer Roger Coponen. The writer's wife is found dead in a luxurious black dress, with an eerie smile frozen on her face. A drowning girl under the ice, a man stoned to death, and other victims: someone is playing the bloody inquisitor, the protagonist of Roger's novel The Witch Hunt. Investigator Yessica Niemi takes over the investigation. And the deeper she delves into the case, the more she realises that the killer is not alone, there is a whole pack of rabid demons in human form. They are always one step ahead of Yessica. But when the light is shed on the dark corners of the investigator's life, she realises that she is not only hunting criminals. She is also hunting demons from her own past...

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