Synopsis

The grim discovery of a mass burial site sends Bill on the trail of Frank McGill, a ruthless killer known for his chillingly unconventional weapon: a nail-gun. Years prior, having betrayed the Maguire gang he once served, Frank entered witness protection and vanished from public view. Now, Bill is determined to find him. Simultaneously, DS Blair secures bail following revelations about improperly obtained DNA evidence, Commissioner Metcalfe contemplates the financial gains of selling off an aban