Book 53 in the Stone Barrington series of suspense thrillers.
"Stone Barrington and his friends are vacationing in Maine when their leisure is suddenly disrupted by extreme weather. To make matters worse, the inclement conditions allow for a menacing adversary to sneak in unnoticed and deliver a chilling message. Soon it becomes clear that the target of the incident is one of Stone's closest companions, and that these enemies have a grander scheme in mind."