 David Stockwell is fascinated by dogs he hears in the forest in the middle of the night. The dogs belong to a group of men involved in illegal badger digging, and when they drive away they hit David s mother with their car. She knows more about the matter than she is willing to tell and makes her backward son change his statement, but PC Rowan has already found a piece of glass from the headlights of the car that hit her and knows he is lying.