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.
Elenco: Hugh Bonneville , Patrick Malahide , Penelope Wilton , Edward Woodward , David Oyelowo , Sarah Smart , Richard Harrington , Charlie Creed-Miles , Janet McTeer , Christine Tremarco , Al Weaver , Anne Reid , David Morrissey , Navin Chowdhry , Kerry Condon , Chris Fountain , Bernard Hill , Suranne Jones , Hugo Speer , Lucinda Dryzek , Derek Riddell , Rory Kinnear , Philip Arditti , Steve Evets .