Sparta. The game is not for life, but for death

What made the young teacher of one of the St. Petersburg schools go out of the window of the school gym? What is this - an ordinary suicide, the act of an unbalanced person, or Anastasia Istomin became a victim of a crime? And why in the same school a month earlier, under obscure circumstances, a girl - a student of the very 11th grade led by Istomin? An experienced police captain Igor Kryukov is taken to these questions. During the investigation, he meets with such manifestations of meanness and betrayal that he did not see in the most difficult previous investigations. Gradually, Kryukov becomes clear that he will be able to find out the whole truth in this story only by sacrificing his career, freedom - and maybe life