All Available Season All Season Specials Jan, 0001 1 episodes 0.0 Series 1 Jan, 2012 2 episodes 6.8 Series 2 Jan, 2013 3 episodes 7.3 Series 3 Dec, 2013 3 episodes 7.7 Series 4 Jan, 2015 3 episodes 7.7 Series 5 Sep, 2016 8 episodes 0.0
