1Épisode 1
1986, Moscow region. A mutilated body of a child is found in the area of government dachas. Three investigators take on a case that will change each of them forever.
2Épisode 2
The next victim of the maniac becomes a teenager from a local pioneer camp, and the only witness again turns out to be ten-year-old Igor Maltsev.
3Épisode 3
The main suspect escapes from the investigators, and another child disappears in the area.
4Épisode 4
Suspect Makurin has been caught, but investigators are waiting for a new terrible find. Meanwhile, Zhenya Bokova is getting worse, and Igor Maltsev's father decides to publish a devastating article about the investigation.
5Épisode 5
The group detains librarian Dmitry Laval, but they lack direct evidence.
6Épisode 6
The mystery of Igor Maltsev has been solved, the Fischer case continues to destroy the lives of its leading investigators, and another tragedy occurs at a stable near Moscow.
7Épisode 7
1992. Three children go to the slot machine club and do not return home. Bokov, Kozyrev and Dobrovolskaya will have to face the Fischer case again.
8Épisode 8
While Dobrovolskaya and one of the teenagers are imprisoned in Fischer's basement, Bokov and Kozyrev go after the killer.