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.
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.
