Season 11 Episode 22 - In a Dark, Dark House 

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.
মূলশব্দ: ক্রাইম সিন ইনভেস্টিগেশন las vegas, season 11, episode 22, in a dark, dark house, full episode