Dennis Rader
Dennis Lynn Rader is an American serial killer known as BTK or the BTK Strangler. Between 1974 and 1991, Rader killed ten people in Wichita and Park City, Kansas. Rader acted out sexual fetishes for voyeurism, autoerotic asphyxiation and cross-dressing. He is serving ten consecutive life sentences at El Dorado Correctional Facility.