After years of pursuit and a countless number of murders, Langston comes face-to-face with serial killer Nate Haskell inside the house where his killing spree began.
original airdate--May 12,2011 rating--11.77 million
songs--Theme song--"Who Are You" by The Who
Goof: When IA officer Schultz turns up, he mentions a previous investigation involving Warwick. The same actor appeared in both episodes, but his name in the first was 'Wagenbach'.