Part Three - Debt of Love: Ackland visits Boyden at home to discuss Amy's disappearance, and offers to help with his granddaughter, Sophie. Later, Hagen arrives, but their encounter is frosty, as Boyden still hasn't forgiven her for shopping Amy. With no formal police co-operation, Boyden sets out to find his daughter himself. Police informant Tyne tells Singh that Amy is a drugs courier for Ashley Mullen. Despite Amy's involvement, Cullen agrees to a covert operation at the next drop. Meanwhile, Boyden manages to trace Amy, who claims to be in great danger, and begs him to look after Sophie until she has sorted things out. As Boyden lets her go, Hagen rings to alert him about CID's plans. (thetvdb.com)