Deep in the dark forests of Sandviken, Sweden, a hiker stumbles upon a shocking discovery that shakes the lives of four families, connected by fond memories of summer vacations, but haunted by a long-buried sinister secret. For 30 years, a sadistic serial killer has been living among them, hunting innocent young girls for his twisted pleasure. The investigation is grueling, and the detectives in charge must not only face a cunning, calculating, and ruthless killer but also their own inner demons. Time is running out, and the question remains, can they catch him before he strikes again? And at what cost? Keywords: mystery, detective, suspense.