On her first day back in uniform, Ackland finds a man brutally stabbed in the house of prominent CPS prosecutor Carl Harris. After arresting Harris for GBH, Ackland discovers that he and Okaro have some previous history - Harris threw out an assault case that Okaro had worked on. Harris's daughter Natasha stays quiet, and it is clear she knows more than she is letting on. When Ackland convinces Natasha to reveal the truth, she reveals that the victim was her biological father, and that he had been blackmailing Harris. Meanwhile, Mark Davies ends up in hospital following a mysterious assault, and Best looks on in horror as Tait bundles his daughter Emily into a minicab and speeds away.