In the 1970s and 1980s, a serial murderer stalked victims (mostly single women) in and near Wichita. He then fell silent for many years, only to resurface in 2004 through a series of communications with local print and television reporters. Dennis Rader was arrested in 2005 and convicted of the crimes. By what three-letter moniker was this serial killer known?
BTK (STRANGLER)