Stone Cold by Robert B. Parker

In the quiet town of Paradise, Massachusetts, Police Chief Jesse Stone has tried to build a life of order and control. But beneath the calm surface, something dark is spreading. A couple with a taste for power — and murder — has moved into town, and their crimes are as precise as they are chilling.

As the bodies begin to mount, Jesse faces a threat unlike any he’s known. The killers are methodical, intelligent, and utterly remorseless — and they’ve turned their gaze on him.

With his own demons closing in, Jesse must walk the thin line between justice and vengeance, knowing that one wrong move could make him the next target.