"Doc Martin" is a British television show that began airing in 2004, and series six refers to its sixth season, which ran in 2013. Eight episodes constituted series six.
"Doc Martin" is a medical comedy series that stars Martin Clunes as Doc Martin, a brusque London-based surgeon who relocates to the Cornish village of Portwenn. The show aired five seasons between 2004 and 2011, and the sixth ran from September to October of 2013. The sixth season contain 46 episodes in total, with each episode a little under 50 minutes in length. As of 2015, the show's creators have announced a seventh season.