The discovery of a burnt out van offers some new evidence to Barclay's investigation, as the suspect slips away; Matt joins Gary with the police, in a stakeout at the home of Hazel Betts; Amy celebrates her retirement with a party at a pub; several new clues bring Barclay and his team close to solving the case.

• Kerry Condon
• Rory Kinnear
• Steve Evets