In a stable where horses used for carrying tourist rest, an old part-time driver was found dead by gunshot. He was a former bookie who recently helped mobsters as an informant. A crescent moon mark was found on his neck and that hint helped detectives in investigating murders happened in the past by the same hit-man. Then Briscoe and Green realized a district attorney's husband was shot dead some time before by a gun of the same caliber and the murderer left the same mark. In both cases, all clues lead to a local Italian American don (Joseph Ragno) who has just been released from prison, easily linked to both murders. Being old, he hired someone to do the dirty work, a real estate broker who looked meek at first sight. McCoy and Southerlyn cut a deal after all the proofs found in the defendant's safe deposit box, so case closed? Not at all folks, Feds come in....
An episode in which we see prosecutors playing dirty, by collecting information from spies and by changing deals for the greater good. Justice is not served at all.