The Catcher by Jack Hunt

There are millions of geocaches hidden around the world — only a few you don’t want to find.

On a fall day in the Adirondacks of Upstate New York, a couple on a scavenger hunt gets more than they bargain for with the smell of death in the High Peaks Wilderness. When a county deputy arrives, a body is found bound to a tree.
But the murder is not what it appears to be, and it’s far from over. At the crime scene, cryptic clues are left behind by the killer to lure the police into a deadly game of cat and mouse.

With the clock ticking between each abduction and possible death, Noah Sutherland and his team must rely on ingenuity to track the cunning murderer through the High Peaks — knowing they have only hours before the Catcher strikes again.