Policemen are being killed in St. Petersburg. According to the "handwriting" of the murders (the offender leaves a characteristic mark on his victims - cards of the "spades" suit - and
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Policemen are being killed in St. Petersburg. According to the "handwriting" of the murders (the offender leaves a characteristic mark on his victims - cards of the "spades" suit - and commits them with a certain sequence), it can be assumed that a serial killer is operating in the city. A complex investigation is becoming a matter of honor for the St. Petersburg operas. Dukalis enters into a psychological duel with the killer and wins him.
