Dennis Rader(BTK Killer)
He is known as the BTK killer (or the BTK strangler). "BTK" stands for "Bind, Torture, Kill", which was his infamous signature. He sent letters describing the details of the killings to police and local news outlets during the time period in which the murders took place.
After a long hiatus in the 1990s through early 2000s, Rader resumed sending letters in 2004, leading to his 2005 arrest and subsequent conviction. He is currently serving 10 consecutive life sentences at El Dorado Correctional Facility in Kansas.
Dennis Rader is the oldest of four sons, born to Dorothea Mae Rader (née Cook) and William Elvin Rader. Though born in Pittsburg, Kansas, he grew up in Wichita. According to several reports, including his own confessions, as a child he tortured animals. He also harbored a sexual fetish for women's underwear and would steal underpants from his victims and wear them himself.
Rader spent four years (1966–1970) in the United States Air Force. Upon discharge, he moved to Park City, a suburb located seven miles north of Wichita. He worked for a time in the meat department of Leekers IGA supermarket in Park City alongside his mother, a bookkeeper for the store.
Rader attended Butler County Community College in El Dorado, earning an associate degree in electronics in 1973. He then enrolled at Wichita State University and graduated in 1979 with a bachelor's degree in administration of justice. He married Paula Dietz on May 22, 1971, and they had two children.
Rader worked as an assembler for Coleman Company, an outdoor supply company, and then, from 1974 until 1988, worked at the Wichita-based office of ADT Security Services, a home security company. He installed security alarms as a part of his job; many of his clients booked the company to stop BTK from entering their homes, unaware that BTK himself was installing them. Rader was a census field operations supervisor for the Wichita area in 1989, prior to the 1990 federal census. He then became a dogcatcher and compliance officer in Park City. In this position, neighbors recalled him as being sometimes overzealous and extremely strict; one neighbor complained that he euthanized her dog for no reason. On March 2, 2005, the Park City council terminated Rader's employment for failure to report to work or to call in. He had been arrested for the murders five days earlier.
Rader was a member of Christ Lutheran Church and had been elected president of the church council. He was also a Cub Scout leader. On July 26, 2005, after Rader's arrest, Sedgwick County District Judge Eric Yost waived the usual 60-day waiting period and granted an immediate divorce for his wife, agreeing that her mental health was in danger. Rader did not contest the divorce, and the 34-year marriage was ended. Paula Rader said in her divorce petition that her mental and physical condition had been adversely affected by the marriage.
All of Rader's known crimes occurred within the state of Kansas. He killed ten people in total and collected items from each murder scene. He also intended to kill others, notably Anna Williams, 63, who in 1979 escaped death by returning home much later than he expected. Rader explained during his confession that he had become obsessed with Williams and was "absolutely livid" when she evaded him. Rader spent hours waiting in her home but became impatient and left when she did not return home from visiting friends. Two of the women Rader had stalked in the 1980s and one he had stalked in the mid-1990s filed restraining orders against him; one of them also moved away.
Rader admitted in his interrogation that he had been planning to kill again. He had set a date, October 2004, and was stalking his intended victim.