Lt. Joe Gunther of the Brattleboro, Vermont, police force has a serious problem: in a community where a decade could pass without a single murder, the body count is suddenly mounting. Innocent citizens are being killed - and others set up - seemingly orchestrated by a mysterious ski-masked man. Signs suggest that a three-year-old murder trial might lie at the heart of things, but it's a case that many in the department would prefer remained closed. A man of quiet integrity, Lt. Gunther knows that he must pursue the case to its conclusion, wherever it leads.

Detective Chief Inspector Harry Grimm is forced to take leave from Bristol’s Major Investigations Team when his boss, tired of Harry chasing the ghost of his murderous father, sends him north on secondment. Used to city life and high stress, Harry fears his life will now be spent handing out speeding tickets, finding lost sheep, and directing tourists. But when a local teenager runs away, Harry finds himself pulled into an investigation much worse than anyone could have ever expected.

Legendary bush pilot Josie Jonson can’t believe her luck when a skilled builder just happens to show up after she purchases land near Prentiss Pond. All Mark Redmond asks in return for building Josie’s dream cabin is that he be left alone to homeschool his 12-year-old daughter, Cady. For Maine game warden investigator Mike Bowditch, the intensity of Redmond's secretiveness is troubling, especially in light of suspicious criminal activity being reported around the area―including rumors of an armed man offering large sums of money in exchange for the location of Redmond and Cady.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

Was the biggest case of his career the worst mistake he ever made? Ten years ago, DCI Jack Logan stopped the serial child-killer dubbed "Mister Whisper", earning himself a commendation, a drinking problem, and a broken marriage in the process...When another child disappears a hundred miles north in the Highlands, Jack is sent to lead the investigation and bring the boy home. But as similarities between the two cases grow, could it be that Jack caught the wrong man all those years ago?