S07E03 Buck the System

http://www.imdb.com/title/tt2170724/ With Deb keeping a close eye on him, Dexter is starting to go stir crazy. He desperately wants to satisfy his dark passenger but first decides to get Louis Greene out of his life forever. Deb is growing increasingly frustrated at the lack of progress in finding Mike Anderson's killer. The murderer's employer, Isaak Sirko, is having much better luck and actually traces his former employee right to Dexter's boat. Dexter wants to kill someone and focuses on the recently paroled killer Ray Speltzer. Dexter is convinced that Speltzer will kill again and tries to convince Deb that he can eliminate him before some young woman gets killed. Deb won't hear of it....but begins to question her own moral code when Dexter proves to be correct