Trial & Retribution: Season 11, Episode 9 Tracks: Part 1 (20 Mar. 2008) Self-made man Ray Herper and his bright teenage son Andy are seen to be driving at a chalk pit. The next day the corpse of young Maria Cole is found there and the police trace the tracks to the Harpers. Andy has a friend Darren, who is lower class and has had dealings with the police. The boys admit to being at the quarry but deny all knowledge of Maria. In fact she was a lap dancer at a club to which Harper took Andy but he fled from her. CCTV footage at a garage where Maria went after being threatened by hoodies shows her getting into a car with Andy and Darren and they are charged with her murder. Trial & Retribution: Season 11, Episode 10 Tracks: Part 2 (27 Mar. 2008) Ray Harper is devastated to find that Andy has hanged himself. Darren admits that he and Andy were a gay couple but dared not tell their families. The case against him collapses and he is released. Mike Walker is having troubles of his own with his teenage son but when Roisin decides to visit Darren at his flat she is in for a shock.