When DS Brooks and DS Devlin are called to the death of a drug mule, they are surprised to discover she is a middle class white girl, Debbie Powell. She was about to go to university, she worked hard, and she wanted for nothing. So why did she do it? Debbie's death hits home for George Castle, and he pressures James and Alesha to bring all charges possible against the defendant. Not an easy case given that are no witnesses, all the evidence is circumstantial, and James' opponent is the brilliant but eccentric Jason Peters.