Moscow is rocked by a series of brutal murders. In the Neskuchny Garden, three girls had already been murdered by a villain, and not just any girls, but maids of honour at the imperial court. A playing card, the ace of spades, was found on each of them. A secret sign? Or is this villain just playing? That is the mystery. The police flee, unable to catch the villain. And the bloody maniac is ready to kill again and again... I should have turned to an ex-con for help, he knows how criminals think.