With the Meredith family reeling from Dylan's death and Sean's arrest, Lisa is charged with finding his alibi and makes a game-changing discovery. Suspicions are raised about another Morecambe resident's involvement with the twins and the police rush to find them. Abbie grows closer to newcomer Vincent, whilst Rob agrees to take on a risky dare. Frustrated by the police investigation, Sean takes matters into his own hands. Starring Morven Christie, Jonas Armstrong, Tracie Bennett and Lindsey Coulson.