Jamie's ex-cellmate Mark comes to stay, but Karen doesn't trust him and the battle lines are drawn. Karen's got a fight on her hands if she's to prevent Mark from leading Jamie back into a life of crime. When Carl gets poor grades in his GCSEs, he realises everybody thinks he's a failure. So he sets out to prove them wrong and, with a little bit of help from Paddy, finds his real talent in the boxing ring. Yvonne gets a shock when she hears that her daughter Meena has arranged her own marriage. Meanwhile, Norma finds herself on a date. But is she over Monica yet?