Question: "The Hunt for the BTK Killer" is based on the true story of murders that took place in what county?

full_context: Document 1: Paul Bernardo: Paul Kenneth Bernardo (born 27 August 1964), also known as Paul Jason Teale, is a Canadian serial killer and serial rapist. He is known for several rapes in the eastern Metropolitan Toronto city of Scarborough, and a series of highly publicized sexual assaults, tortures and murders committed with his wife, Karla Homolka.
Document 2: Jeffrey Dahmer: Jeffrey Lionel Dahmer (May 21, 1960 – November 28, 1994), also known as the Milwaukee Cannibal, was an American serial killer and sex offender, who committed the rape, murder, and dismemberment of seventeen men and boys between 1978 and 1991. Many of his later murders involved necrophilia, cannibalism, and the permanent preservation of body parts—typically all or part of the skeletal structure.
Document 3: Charles Starkweather: Charles Raymond "Charlie" Starkweather (November 24, 1938 – June 25, 1959) was an American teenaged spree killer who murdered eleven people in the states of Nebraska and Wyoming in a two-month murder spree between December 1957 and January 1958. All but one of Starkweather's victims were killed between January 21 and January 29, 1958, the date of his arrest. During the murders committed in 1958, Starkweather was accompanied by his 14-year-old girlfriend, Caril Ann Fugate.
Document 4: The Hunt for the BTK Killer: The Hunt for the BTK Killer is a 2005 biographical telefilm directed by Stephen T. Kay. First shown on CBS it is based on the true story of Dennis Rader killing ten people from 1974 to 1991. Though the events take place in Wichita, Kansas, the film was made in Nova Scotia.
Document 5: Dennis Nilsen: Dennis Andrew Nilsen (born 23 November 1945) is a Scottish serial killer and necrophiliac, also known as the Muswell Hill Murderer and the Kindly Killer, who murdered at least 12 young men in a series of killings committed between 1978 and 1983 in London, England. Convicted of six counts of murder and two of attempted murder at the Old Bailey, Nilsen was sentenced to life imprisonment on 4 November 1983, with a recommendation that he serve a minimum of 25 years. He is currently incarcerated at HMP Full Sutton maximum security prison in Full Sutton in the East Riding of Yorkshire, England.
Document 6: Red John: Red John is a fictional character and the primary antagonist of the CBS crime drama "The Mentalist" for the first five seasons and half of the sixth. As a serial killer, he is believed to have begun his killing spree in 1988, and has, with his operatives and acolytes, killed more than 70 people in California, Nevada, and Mexico, throughout his murder spree. Five years prior to the action of the first episode, he murdered the wife and the daughter of Patrick Jane (Simon Baker), making Jane his dedicated nemesis.
Document 7: Murder of Serena McKay: Serena Chelsea McKay (September 30, 1997-April 22/23,2016) was a Canadian girl that was brutally murdered and her murder was posted online. The accused suspects are two teenage girls aged 16 and 17. The murder happened on the Sagkeeng First Nation 100 kilometers northeast of Winnipeg, Manitoba. Her murder was filmed and posted online causing great outrage across Canada. The video came in a short version and long version and the short version was posted on Facebook. The long version was available for 4 hours but later deleted from the public. Sagkeeng's Grand Chief Derrick Henderson had requested to Facebook to remove the short video from the public. It is not exactly known whether she died on April 22 or April 23 as she was last seen on the evening of April 22, 2017, confirmed missing at 6:pm on April 23, 2017, and a dead body later confirmed to be Serena McKay was found at 8:pm on April 23, 2017. Two teenage were arrested. Their names can't be named publicly because of a Canadian law that prohibits releasing names of youth-criminals or accused youth-criminals. It is known that the 2 girls accused in the murder did go to school with Serena McKay. Prosecutors are trying to seek adult sentences for the 2 accused teenage girls if they are found guilty. On May 26, 2017, the 17 year old suspect has had her first trial at a Winnipeg provincial court where both the defence lawyers and prosecutors ordered a psychological test. She is being held at the Manitoba Youth Centre (a prison for youth which has both remand, post remand, and convict units) since her arrest shortly after the murder. The 16 year old has also been ordered to go a psychological assessment. A vigil was held in Winnipeg on April 29, 2017 with hundreds marching. McKay was set to graduate in 2017. McKay's funeral was held at Westwood Church in Winnipeg on May 1, 2017. She was also buried in Winnipeg. At McKay's high school's graduation on June 23, 2017 what would have been her seat was left empty and marked with a red graduation gown and diploma. All this was done in honour and memory of Serena McKay.
Document 8: Manhunt: Unabomber: Manhunt: Unabomber is an American drama miniseries created by Andrew Sodroski. The series stars Paul Bettany, Jane Lynch, Sam Worthington, Katja Herbers, Chris Noth, Michael Nouri and Brían F. O'Byrne. The series depicts a fictionalized account of the true story of the FBI's hunt for the man known as the Unabomber. The miniseries premiered on August 1, 2017, on Discovery Channel.
Document 9: Gary Ridgway: Gary Leon Ridgway (born February 18, 1949) is an American serial killer known as the Green River Killer. He was initially convicted of 48 separate murders and is presumed to be responsible for more than 90. As part of his plea bargain, an additional conviction was added, bringing the total number of convictions to 49, making him the most prolific American serial killer in history according to confirmed murders. He murdered numerous women and girls in Washington State during the 1980s and 1990s.
Document 10: Randy Steven Kraft: Randy Steven Kraft (born March 19, 1945) is an American serial killer known as the "Scorecard Killer" and the "Freeway Killer" who committed the rape, torture, mutilation, and murder of a minimum of 16 young men in a series of killings spanning between 1972 and 1983, the majority of which had been committed in California. Kraft is also believed to have committed the rape and murder of up to 51 further boys and young men. He was convicted in May 1989 of murdering 16 victims and is currently incarcerated upon death row at San Quentin State Prison in Marin County, California.
Document 11: Richard Kuklinski: Richard Leonard Kuklinski (April 11, 1935 – March 5, 2006) was an American contract killer and serial killer who was convicted of murdering five people, though he likely killed at least several dozen more. He was associated with members of the American Mafia, namely the DeCavalcante crime family of Newark, New Jersey, and the Five Families of New York City.
Document 12: Dennis Rader: Dennis Lynn Rader (born March 9, 1945) is an American serial killer who murdered ten people in Sedgwick County, Kansas between 1974 and 1991.
Document 13: The Long Island Serial Killer (film): The Long Island Serial Killer (also known as The Gilgo Beach Murders) is a 2013 American true crime horror film loosely based on the elusive Long Island serial killer who murdered seventeen women on Long Island between 1996 and 2010.
Document 14: Randall Woodfield: Randall Brent "Randy" Woodfield (born December 26, 1950) is an American serial killer who was dubbed The I-5 Killer or The I-5 Bandit by the media due to the crimes he committed along the Interstate 5 corridor running through Washington, Oregon, and California. Before his capture, the I-5 Killer was suspected of multiple sexual assaults and murders. A native of Oregon, Woodfield was convicted of three murders and is suspected of killing up to 44 people. He is currently incarcerated at the Oregon State Penitentiary. In 2011, Woodfield was the subject of a Lifetime television movie "Hunt for the I-5 Killer". The movie was based on the book "The I-5 Killer" by crime author Ann Rule.
Document 15: Grim Sleeper: Grim Sleeper is the nickname for convicted serial killer Lonnie David Franklin Jr., responsible for at least ten murders and one attempted murder in Los Angeles, California. The attacker was dubbed the "Grim Sleeper" because he appeared to have taken a 14-year break from his crimes, from 1988 to 2002. In July 2010, Franklin was arrested as a suspect, and, after many delays, his trial began in February 2016. On May 5, 2016, the jury convicted him of killing nine women and one teenage girl. On June 6, 2016, the jury recommended the death sentence, and on August 10, 2016, Los Angeles Superior Court sentenced him to death for each of the ten victims named in the verdict.
ground_truth: Sedgwick County