Following new evidence obtained by DC Kate Fleming, the former Head of Vice Patrick Fairbank is questioned by AC-12, but despite Kate's best she is left frustrated. Worried by Arnott's contact with Lindsay Denton, DI Dot Cottan takes matters into his own hands, with shattering consequences. Under pressure from AC-12 legal counsel Gill Biggeloe, Ted Hastings has no choice but to make a dramatic and heartbreaking decision.