It's a tense Corrie Christmas episode as Peter seeks revenge for the death of his twin sister Susan all those years ago by piling Billy into the boot of his car and taking him to a cliff. Yes, a cliff! They don't do things by half in soapland at Christmas. Elsewhere, Carla's surprise arrival annoys Aidan, while Daniel is amused to find Tracy sneaking Steve out of Number 1 and, following his arrest, Brian punches a drunk man at the station for insulting Cathy.