For many centuries, a mysterious deck of cards has interfered with human destinies. According to legend, it was the seat of the powers of the great sage Hermes Trismegistus. Through magical cards, the spirits of the sage and his faithful servants called for justice: they protected virtue and punished sinners. Thousands of years later, amateur detective Nadezhda Lebedeva, investigating a series of murders that swept across St. Petersburg, discovers that the victims seem to correspond to the merits and suits of playing cards. Are the ruthless criminal and his victims connected to the incomprehensible magic of the ancient deck? King, queen, jack... Do people play cards or do people play cards? This is what Mrs. Lebedeva will have to figure out.