04:25Doctor Who (2005–2022)Series 6Episode 7: A Good Man Goes to WarBBC One Duration: 50 minutes Audio described Signed Mon 6th Jun 2011, 04:25 on BBC ThreeAvailable for yearsWatch nowThe Doctor assembles an alien army to fight the Battle of Demons Run, and we finally discover who River Song really is...ContributorsThe Doctor:Matt SmithAmy:Karen GillanRory:Arthur DarvillRiver Song:Alex KingstonMadame Kovarian:Frances BarberLorna Bucket:Christina ChongLucas:Joshua HayesDominicus:Damian KellFat One:Charlie BakerWriter:Steven MoffatProducer:Marcus WilsonDirector:Peter HoarThin One:Dan JohnstonColonel Manton:Danny SapaniMadame Vastra:Neve McIntoshJenny:Catrin StewartCaptain Harcourt:Richard TrinderEleanor:Annabel CleareArthur:Henry WoodCommander Strax:Dan StarkeyDorium Maldovar:Simon Fisher-BeckerHenry Avery:Hugh BonnevilleToby Avery:Oscar LloydVoice of the Cybermen:Nicholas BriggsGenresDramaSciFi & FantasyBrandDoctor Who (2005–2022)SeriesDoctor Who (2005–2022): Series 6 Source: BBC Online