During the 1970s, KAKE received letters, poems and packages from the "BTK" serial killer. One claimed responsibility for several of the BTK murders; another contained clues about an intended victim (who survived). During an interview with Wichita's police chief in the late 1970s, subliminal messages were broadcast on KAKE to convince the BTK killer to turn himself in; the effort was unsuccessful. In 2004 and 2005, the BTK killer once again sent letters to KAKE – one included a word puzzle, while another expressed concern about the colds that anchors Susan Peters and Jeff Herndon had suffered at the time. Park City resident Dennis Rader was eventually arrested and convicted of the murders.