20:40CasualtySeries 28Episode 34: When Nothing Else MattersBBC One Duration: 50 minutes Sat 19th Apr 2014, 20:40 on BBC One Northern IrelandFletch builds bridges between a father and son estranged by drugs. Cal tries to discover what is wrong with a man who thinks he has a brain tumour.ContributorsAdrian 'Fletch' Fletcher:Alex WalkinshawCaleb Knight:Richard WinsorEthan Hardy:George RainsfordLily Chao:Crystal YuZoe Hanna:Sunetra SarkerMartin 'Ash' Ashford:Patrick RobinsonJeff Collier:Matt BardockKathleen 'Dixie' Dixon:Jane HazlegroveBig Mac:Charles DaleCharlie Fairhead:Derek ThompsonRobyn Miller:Amanda HendersonNoel Garcia:Tony MarshallMax Walker:Jamie DavisBen 'Lofty' Chiltern:Lee MeadElla Ashford:Tahirah SharifColin Starky:Bill FellowsPreston Starky:Tom BrittneySean Starky:Thomas LawKevin Robertson:Jamie HowardLucy:Alice BarlowJason:Ashley ChinProducer:Caroline BrittainDirector:Ashley WayWriter:Mark StevensonGenresDramaMedicalBrandCasualtySeriesCasualty: Series 28 Source: BBC Online