Lisa asks Lizzie for a word and, assuming she is going to apologise, Lizzie obliges. Lisa summons her strength and explains that Lizzie needs to stay away from Derek. Lizzie is sure that Lisa is jealous and doesn't understand why she's being like this. When Derek steps in to defend Lizzie, Lisa snaps and blurts out what he did to her. Meanwhile, Nicola and Carl talk to the Peterborough police.