A new book from the Artifact and Detective series!All Dasha dreams of after a violent quarrel with her boyfriend is finding a roof over her head for the night. But a burglar visits the empty apartment where her friend let her in at night, and the friend herself stops contacting in the morning.What was the night visitor looking for? Which door does the antique key that Dasha found in an empty apartment fit? What is the mysterious man who appears in her dreams silent about, and what does the Queen of Spades have to do with it?Dasha will have to plunge into the past to find out the story of the mysterious artifact and fill in the gaps in the story of her own life.