S1, E5: The discovery of a burnt-out van offers fresh evidence to Barclay's team, but the prime suspect slips away at a most inopportune time. As a furious Matt joins Gary (and the police) in a nighttime stakeout at the home of Hazel Betts, Amy celebrates her retirement with farewell party at a pub that ends up embarrassing its guest of honor. But Amy's work on the case isn't quite finished--several new clues bring her and Barclay to the verge of finally solving the case.