The second season finale was seen by 4.2 million viewers — the first time the show has cracked four million viewers for a first-run airing — and delivered 5.1 million for the night including repeats. The news is particularly welcome after the previous week’s penultimate “Battle of the Blackwater” episode actually dipped in the overnight Nielsens. These finale numbers confirm our assumption the Blackwater decline was merely due to the Memorial Day weekend holiday.