For the series itself, I do not want to say much. The Doctor has grown me over many seasons away his heart and always a pleasure to watch. Unfortunately, this is probably something went wrong at Prime: In Season 6, there is the last episode twice, which result is 14 named after the Christmas Special "starry sky". In Season 7 just this Christmas will be shown instead of the Special Episode 1. Episode 2 is then the first episode of season 7, but in German!
Please dear Amazon Prime team that brings it all right! So the look of this wonderful series does not have too much fun :(