The house on the hill

DCI Billy McCartney has gone to ground, disillusioned with his job. When a runaway turns up on his doorstep, her story plunges Mac back to the summer of 1990, and one of his most traumatic cases. Ibiza - a joint venture with the Spanish serious crime agency. McCartney and his partner DS Millie Baker have been detailed to infiltrate the Liverpool-based drug gang responsible for a wave of ecstasy-related deaths.