Detective Inspector Delaney is looking forward to spending Christmas with Kate Walker and his young daughter Siobhan, but the past always had a way of ruining Jack's best-laid plans. And this holiday season is no different! A year previously, Delaney was responsible for the arrest of Michael Robinson, a viciously violent rapist. Robinson always claimed he was set up by the police but before he could be brought to trail he was brutally attacked in prison and left for dead. He didn't die, however, and a year later, out of hospital and fit for trial - he is pointing the finger squarely at Delaney for the assault that nearly killed him. And not only that - it looks like he has a case! And everything is about to get a whole lot worse for the Detective Inspector when Robinson walks free from court. There are new faces at White City - and with them come old crimes, old bones and old scores to settle! It seems that Delaney is not the only one in West London with a past they'll take any measures to hide. And as the body count starts to climb - it looks like Jack himself might be about to join the club.