Vladimir Dolin

Vladimir Nikolayevich Dolin (; 1983 – December 25, 2009), known as The Kopeysk Maniac , was a Russian serial killer and rapist who killed two girls in Kopeysk in 2007 and 2008, after having been released from a prior murder conviction. Convicted and sentenced to life imprisonment for the latter crimes, he hanged himself in prison a few months into serving his sentence.

Murders Dolin committed his first severe crime at age 16, when he was convicted of killing an unidentified teenager on hooliganistic grounds. For this crime, he was sentenced to 8 years and six months imprisonment and was released in November 2006. According to psychiatric reports obtained from the institution he was detained at, Dolin was described as "cunning, dodgy, quick-tempered and unbalanced".

After his release, he returned to Kopeysk and lived a relatively normal life for more than a year, but eventually resumed killing again. On December 17, 2007, he was walking down the street when he took notice of 5-year-old Anya Nikitina playing on the street. In both of these crimes, Dolin undressed the victims and then hid their clothing to prevent identification. Due to the overwhelming amount of evidence against him, he was swiftly convicted and sentenced to life imprisonment in a special regime penal colony. It was determined that he had hanged himself with a washcloth, leaving behind a suicide note in which he stated that nobody else should be blamed for his death.