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In a hotel room, judge Valery Kulish was strangled with women's tights. It turns out that at the time of the murder there was a blackout in the hotel. Suspicion falls on the prostitute Angela Ponomareva, who served Kulish, and the visiting businessman Roman Rozhkov, who started a brawl in the bar. But Kulish's wife points to electrician Lukyanov, who previously threatened to kill her husband...