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One day, for no apparent reason, a cop kills 11 children. The same day, horror novelist Thomas Roy tries to commit suicide after cutting his fingers. At first glance, nothing seems to link the two events – until Dr. Paul Lacasse, a disillusioned psychiatrist, takes over the case. Prompted by his colleague Jeanne, a fan of Thomas Roy, Dr. Lacasse investigates the writer’s past. Hounded by a gossip columnist, Dr. Lacasse uncovers a series of troubling facts that bolster his convictions about the case. As he tries to reassemble the pieces of the puzzle in order to better treat the famous writer, Dr. Lacasse is dragged further and further into a series of events, with terrifying consequences.