Johnny demands that Rob tell him how he knows. Rob explains that his mother once told him they had a one-night stand and nine months later Carla was born. Johnny admits to sleeping with her but feebly denies being Carla's dad. Rob admits he never believed her fanciful tale before. When Kylie tells Sarah how she found the details of the abortion clinic, Sarah confirms that she's pregnant, that it's Callum's and that she's getting rid of it. Carla and Nick's engagement party gets underway. Rob threatens to reveal the truth to Carla, Aidan and Kate unless Johnny gives him £10,000. Johnny refuses to be blackmailed and walks out. As he leaves, Johnny gleefully tells Rob about Tracy's new relationship with her ex-husband. With Ken's encouragement, Nessa agrees to go to the party despite the awfu