In this season finale, Langston and Haskell's stand-off ends with Haskell dead. Our CSIs must investigate one of their own when much of the evidence points to the theory that Langston intentionally murdered Haskell. The bulk of the episode centers on the CSIs investigating the scene at the old farmhouse, where Langston and Haskell came to final blows. Haskell was thrown from the balcony, and there is some question as to whether or not it was an accident. Suspicion peaks, when there are cuff marks found on Haskell's wrists, but no cuffs found at the scene. In the end it is revealed to the audience that Brass knows what Langston did, and protected him. The season ends with Langston saving his ex wife Gloria, and ending up in front of Internal Affairs.