Cello and Goodbye
CSI Season 11 Episode 21 (05/05/11)
The hunt for Nate Haskell continued in L.A. where the dead body of Gloria's (Ray's ex-wife) new husband was found in a dumpster. At the scene of the crime Ray decided to recuse himself from the case, but he had a change of heart and decides to hunt Haskell down himself.
Ray became a murder suspect when Tina Vincent was found shot in the head. Nick found Ray and decided to help him out. They tracked Haskell to an amusement park but lost him in the crowd. Ray was arrested and Catherine forced him to go back to Las Vegas.
Back in Vegas Ray did further research on the clues Haskell had left behind for him. He tracked Nate back to a farmhouse. There he found his ex-wife chained to a radiator, and was then ambushed by Haskell as he tried to save her.