A security guard is murdered during a break and enter at the fortress-like home of a wealthy banker. The only forensic evidence is a child's tooth discovered near his body, but could a child be capable of such a horrific crime? Joe's father, in failing health, has resurfaced in his life hoping for a reconciliation.

The Kingsway detectives are drawn into the medical world when an anaesthetist is found dead in a hospital car park. Was it a random attack or could malpractice have had something to do with it? Investigations soon reveal that the murder victim had many skeletons in her closet. But so too, it seems, do several of the other doctors and patients at the hospital where she worked. Meanwhile, having sworn Harriet to secrecy about being stabbed with a needle by a junkie, Theo is furious when she breaks his confidence.