In all the first reports about the attack on Kazan gymnasium No. 175, with reference to law enforcement agencies, including the FSB, one thing was said: there were several attackers, one of them surrendered, the other was killed. This book captures the trial of the “Kazan shooter” that took place a year and a half later, a process of merciless and shameless struggle with logic and facts, during which law enforcement agencies ignored hundreds of contradictory testimonies of witnesses and victims, hid video from the gymnasium cameras, and lost records from police recorders and as a result, they successfully left Ilnaz Galyaviev as the only culprit of the tragedy.