Animal-control supervisor Dennis L. Rader, the BTK killer, murdered 10 people around Wichita, Kan., between 1973 and 1991, and taunted police with letters about his deeds. The acronym stood for "bind, torture, kill," the strangler's preferred method of murder. Rader was captured in 2004 when he sent police a floppy disk from the church where he served as president of the congregation council. He is in solitary confinement in a Kansas state prison, serving 10 consecutive life terms. His earliest possible release date is 2180.