Belfast 1988:
A man has been shot in the back with an arrow. It ain't Injuns and it isn't Robin Hood. But uncovering exactly who has done it will take Detective Inspector Sean Duffy down his most dangerous road yet, a road that leads to a lonely clearing on the high bog where three masked gunmen will force Duffy to dig his own grave. Hunted by forces unknown, threatened by Internal Affairs and with his relationship on the rocks, Duffy will need all his wits to get out of this investigation in one piece...