Moscow, 1876. In the Alexander Gardens in front of the parade commits suicide a young man. The situation becomes even more confused after the testimony of witnesses who, it turned out, this day saw another man who tried to kill himself. Twenty Fandorin, capable of compelling the clerk and the Criminal Investigation Department, began an investigation. It will have to find out: why the two young men brought the revolver to his temple and pulled the trigger? Why in the drum was only one bullet? And where are the fallen angel Azazel?
