the wichita police department on friday received information from the wichita eagle and received a lettericki wegerle on september 16, 1986. the letter contained copies of photographs and a personal item of ms. wegerle. we've also been able to determine that this communiqué most likely came from btk. we begin tonight with a killer on the loose, a madman still out there taunting police and reporters. he's known as the btk killer because he binds, tortures, and kills his victims. for more than 30 years, wichita has lived in fear of those initials, and tonight it seems he has surfaced yet again, sending new clues about who he is and the lives he's taken. peters: we were scared to death. it was a total replay of when he was killing in the '70s. was he still killing right now? and who was gonna be next? ♪ ♪ (don't cha by callaway/ray plays) ♪ ( ♪ ♪ ) don't cha wish your phone was fun like this? ( ♪ ♪ ) don't cha wish your phone looked more like this? don't cha wish your phone could flex like this? ( ♪ ♪ ) don't cha wish your phone could fit in here? don't cha? ( ♪ ♪ ) pre-order now and get a f