U.S. police chief Bill Hixon lands in the British town of Boston, Lincolnshire, with his 14-year-old daughter Kelsey in tow hoping they can flee their painful recent past. But this unfamiliar, unimpressed community will force Bill to question everything about himself and leave him asking whether it's Boston that needs Bill, or Bill that needs Boston?
DC Muriel Yeardsley
ACC Lydia Price
The discovery of a pyre of bodies puts Bill on the hunt for Frank McGill, a hitman notorious for his weapon of choice: a nail-gun. However, having been put into witness protection years earlier after turning in other members of the Maguire gang which he worked for, Frank is now off-grid. Bill sets his sights on tracking him down. Meanwhile, DS Blair is released on bail after information is leaked regarding the unlawful obtaining of key DNA, Commissioner Metcalfe discusses the financial benefits of selling off a disused training facility and the pressure mounts for Bill to resign.