serial killer with 17 known victims. Many of his killings included sexual assaults. Richard Allen Davis: Convicted of kidnapping, committing a lewd act on, and murdering Polly Klaas (see "Victims" section). Josef Fritzl: An Austrian man who began sexually abusing his daughter Elisabeth in 1977 and kept her imprisoned in his home from 1984 until 2008. He repeatedly sexually abused and raped Elisabeth, resulting in the births of seven children and one miscarriage. One of the children died in infancy, and three were imprisoned along with Elisabeth until 2008. Li Hao: Raped six women as sex slaves and murdered two of them in underground dungeon from 2009 to 2011. Li Hao was executed in 2014 via the death penalty. Jesse Timmendequas: A registered sex offender who lured Megan Kanka (see "Victims" section) to his house and then raped and murdered her. Peter Tobin: British criminal with a long record, including convictions for two rapes, who was convicted of the rape and murder of a female Polish student in 2007. After this conviction, he was found guilty of the murders of two teenage girls who disappeared in 1991, and has reportedly claimed to have killed more than 40 other people. Ottis Toole: Serial killer who confessed to multiple murders and rapes; believed to be the killer of Adam Walsh (see "Victims" section). Don Vito: American reality television personality convicted of groping two 12-year-old girls in 2007. Ariel Castro: Suspect in the Kidnappings of Amanda Berry, Gina DeJesus, and Michelle Knight. Chris Ortloff: Former New York Assemblyman and New York Parole Board member, sentenced August 9, 2010 to twelve years and six months in prison plus lifetime supervision and a US$50,000 fine, after pleading guilty to a federal felony charge of online enticement of minors. John Wayne Gacy: American serial killer who kidnapped, raped, tortured and murdered at least 33 young men and teenage boys. Dean Corll: American serial killer with at least 28 victims in the Houston area known as Houston Mass Murders. All included sexual assaults. Elmer Wayne Henley: American serial killer & accomplice of Dean Corll involved in the crimes known as Houston Mass Murders. All included sexual assaults. André Boisclair: Canadian former politician who pleaded guilty to two counts of sexual assault on two young men. Reynhard Sinaga: Indonesian student who was convicted of 159 sex offences, including 136 rapes of young men in Manchester, England, United Kingdom.