Rader.

1. He spent the majority of his life in Kansas.

Born Dennis Lyn Rader on March 9, 1945 in Pittsburgh, Kansas, he grew up in Witchita, the eldest of four sons belonging to Dorothea Mae Rader (née Cook) and William Elvin Rader.

"By his own account and several reports, he engaged in animal torture during his early years, hanging cats and dogs in barns, and harbored a sexual fetish for women's underwear. After attending the Kansas Wesleyan University between 1965 and 1966, he was in the U.S. Air Force until 1970, stationed in Texas, Alabama, Okinawa, South Korea, Greece, and Turkey. During this time, he would peep at women undressing and burglarize houses to steal womens' underwear."

2. From the outside, he appeared to be a model citizen.

Once he left theAir Force, Rader married a woman named Paula Dietz on May 22, 1971, with whom he had two children, son Brian and daughter Kerri. After completing an associate's degree in Electronics and a bachelor's degree in Administration of Justice, he went to work as an assembler for an outdoor supply company.

He then went on to install private home security systems for ADT Security Services from 1974 to 1988. In many cases the homeowners were choosing to purchase such protection due to their fear over the BTK killings.

He briefly worked as a census field operations supervisor for the Wichita area, and then as a dogcatcher and compliance officer in Park City. While in this role, "neighbors recalled him as being sometimes overzealous and extremely strict. One neighbor complained he