20:00His Dark MaterialsSeries 1BetrayalBBC One Duration: 57 minutes Audio described Sun 22nd Dec 2019, 20:00 on BBC One West MidlandsAvailable for yearsWatch nowAs the Magisterium closes in, Lyra learns more about Asriel's rebellion. But her assistance to him comes at great personal cost.ContributorsLyra Belacqua:Dafne KeenMrs Coulter:Ruth WilsonCarlo Boreal:Ariyon BakareThorold:Gary LewisRoger Parslow:Lewin LloydLord Asriel:James McAvoyIorek Byrnison:Joe TandbergWriter:Jack ThorneDirector:Jamie ChildsProducer:Laurie BorgProduction Company:Bad Wolf ProductionsGenresDramaSciFi & FantasyBrandHis Dark MaterialsSeriesHis Dark Materials: Series 1 Source: BBC Online