One of the episodes is about a cab driver who was shot & killed in 1961. The bullet had fragmented into 3 pieces & the 2 groups of men examining the rifling couldn't conclusively say it was or wasn't fired from the suspects gun. Over 40 yrs later, same story, so they sent the fragments to an outside source. This man cleaned the blood & brain matter off the fragments & got a positive match. The men involved in re-opening the case were astounded & amazed & called it a miracle. I am completely apalled & flabbergasted that no one thought of cleaning the fragments 40 yrs earlier & that the men who re-opened the case thought it was so amazing & fantastic that someone thought to clean the fragments to see rifling. Really???