Yuri Anufrievich Ivanov (Russian: Ю́рий Ану́фриевич Ивано́в; 1956–1989), known as The Ust-Kamenogorsk Maniac, was a Soviet rapist and serial killer. In the span of 13 years, he raped and killed 16 girls and women. He committed his crimes in Ust-Kamenogorsk, in the area of the "Combine of silk fabrics" factory. Biography Yuri Ivanov worked as driver. He was married, as was his daughter. One day, he returned home from work and found his wife in bed with a lover. Ivanov then developed a hatred towards, and vowed to kill, women who cheat on their husbands. During the investigation, Ivanov said that he talked with a lot of women, learning about their opinions towards men. If the woman spoke ill of her husband or men as a whole, he would kill her. He would rape and subsequently choke his victims to death. After the murder, as a rule, he would take some of deceased's personal belongings. He was eventually sentenced to 3 years imprisonment for attempted rape. In the colony, Ivanov worked as a driver. With the opportunity to travel beyond the colony, he committed several crimes while still serving time. From 1977 to 1987, Ivanov did not kill, as his personal life was adjusted. But after he and his wife divorced in 1986, he returned to violent crime. In 1987, he killed a 16-year-old girl. At the crime scene, an aluminum button and a hair sample were found that did not belong to the victim. An ambush was set up at the murder scene the next day and, when Yuri Ivanov came back, he was arrested. Facing strong evidence against him (two of his cohabitants, whom he had given items from the victims, gave the police a purse with his fingerprint, and his jacket that lacked an aluminum button), Ivanov confessed to the rape and murders of 16 women and girls and 14 separate rapes. Ivanov remembered the events that spanned many years, short of slight details, directing police to all the crime scenes without much error. He said that he remembered the faces of his victims, and to prove this, the investigators devised a unique experiment - "identification of the contrary": they showed him photos of different women, so he would determine which of them he had raped or killed. Ivanov identified the pictures of his victims without mistake. For the murder of one of the women in 1974,