Following the death of his wife, William Ashurst an old friend of Paul Dangerfield's father, returns to the area of his childhood, but is regarded with suspicion by the other residents of the Foxwood estate.

A prisoner confides in Dangerfield following a prison riot. When the man later dies in police custody, Paul decides to investigate. Meanwhile, Marty is determined to help Al in her hour of need.

A routine investigation into a probable cot death at a remote farmhouse reveals suspicious evidence.