All Available Season All Season Season 1 Sep, 2008 4 episodes 0.0 Season 2 Nov, 2010 4 episodes 7.0 Season 3 Jun, 2011 10 episodes 7.0 Season 4 May, 2014 4 episodes 7.0 Season 5 Mar, 2016 8 episodes 7.3 Season 6 Aug, 2018 8 episodes 7.1 Season 7 Apr, 2021 8 episodes 6.9 Season 8 Aug, 2023 8 episodes 7.5
