This icon is several centuries old. What kinds of people and events have not passed before the sad face of the Tverskaya Mother of God! And now—yet another test: during an exhibition in a museum, a guard is murdered, and the unique work by an ancient master disappears. Where is it now, the lost relic? Will it appear again to people or vanish forever in some collector’s collection? That depends only on the city’s best private detective, Tatyana Ivanova—on her subtle calculations, on her willingness to risk everything when necessary, including her life, and on her stubbornness, finally…