In an unassuming house, on a quiet residential street in south London, a husband and wife are discovered, imprisoned in their own home Badly dehydrated, they've been bound and beaten and the husband is close to death But worse is to come their young son is missing When DI Jack Caffery of the Met's AMIT squad is called in to investigate, the similarities to events in his own past make it impossible for him to view this new crime with necessary detachment As Jack attempts to hold his own life together in the face of ever more disturbing revelations, the real nightmare begins