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Murdered the owner of a successful travel company Elena Dudareva. The police can find almost blind boy Artem, who talked to the murderer. Artem can not describe the appearance of the killer, but well remembered his voice and the music he listened to. The disclosure of this assassination Nastya Kamenskaya is necessary to solve a difficult question: does she have the right to involve in risky search for the murderers the young man with a disability?