20:25CasualtySeries 31Episode 21: The Stag, the Dog and the SheepBBC One Duration: 50 minutes Sat 4th Feb 2017, 20:25 on BBC One Northern Ireland HDCharlie is missing following his stag do, and Duffy is convinced he has cold feet.ContributorsCharlie Fairhead:Derek ThompsonLisa 'Duffy' Duffin:Cathy ShiptonEthan Hardy:George RainsfordCaleb Knight:Richard WinsorDylan Keogh:William BeckNoel Garcia:Tony MarshallMax Walker:Jamie DavisConnie Beauchamp:Amanda MealingElle Gardner:Jaye GriffithsLily Chao:Crystal YuLouise Tyler:Azuka OforkaRobyn Miller:Amanda HendersonJacob Masters:Charles VennDavid Hide:Jason DurrIain Dean:Michael StevensonAlicia Munroe:Chelsea HalfpennyJez Andrews:Lloyd EverittJosh Griffiths:Ian BleasdaleAlexandra 'Lexy' Morrell:Jenny HoweLionel Withers:Jeremy SwiftTerry Boydell:Shaun WilliamsonCandy Brooke:Ellie GoffeSarvas Novak:Rad KaimJade Clarke:Tonya SmithWriter:Jeff PoveyDirector:Sean GleesonProducer:Dafydd LlewelynGenresDramaMedicalBrandCasualtySeriesCasualty: Series 31 Source: BBC Online