Original sentence: Season 2 commenced broadcasting on 6 October 2007 with the final two episodes on 29 December 2007.Season 3 began airing on 28 March 2009  for a thirteen episode run
Edited sentence: Series 2 commenced broadcasting on 6 October 2007 with the final two episodes on 29 December 2007.Series 3 began airing on 28 March 2009  for a thirteen episode run