Meglin's stay at a psychiatric hospital is cut short by news that an escaped serial killer is on a rampage, leaving behind a horrific video message.
A murder investigator is found dead of a single stab wound on the doorstep of her Serpukhov apartment, killed by the suspect she was trying to find.
A teen brings a rifle to school and opens fire, afterward telling police he will speak only to Meglin. Memories of a childhood trauma haunt Meglin.
An incinerated body is found chained to an overpass in the Sergiyevo-Posadsky District. Esenya visits Olga at the psychiatric hospital.
Esenya acts as bait to catch a cabbie who kills women lured from a Nizhny Novgorod train station. Later, she learns Meglin has history with her dad.
When young boys start vanishing in a small town, Meglin and Esenya suspect that the beloved leader of a hiking club for at-risk kids is responsible.
Managing to escape, the serial shooter leads Meglin and Esenya on a chase to the orphanage that Meglin spent his childhood in.
The murder of an aspiring actress-model leads the detective duo to the young woman's talent agency. Meglin gets the results of his medical evaluation.
Meglin challenges Esenya to use clues to piece together a psychological profile on a killer who's drugging and hanging female university students.
Esenya and Meglin are called in to investigate the mysterious disappearances of members of an opera house's board of directors.
Meglin finds a mysterious link between recent serial murders of vulnerable schoolgirls and a string of deaths involving solitary senior women.
A serial killer who murders his victims in ways symbolic of how they've hurt others decides to add a member of the investigative duo to his kill list.
Esenya's first case with Meglin takes them to Lipetsk, where she learns what he's capable of while tracking a serial strangler of young women.
In Troitsk, a gunman with an athletic M.O. targets the parents of young gymnasts. Esenya learns a detail about the weapon that killed her mother.
The disappearance of a teen girl from a rural train station leads the pair to visit a series of strange people with a common tie to Meglin's past.
While Esenya celebrates graduation at a Moscow nightclub with her schoolmates, a sudden murder brings enigmatic investigator Meglin to the scene.
