Backroad. The Backwoods Justice Series, #1

In the Summer of 1995, three friends set off on a road trip to celebrate their graduation and the start of their first summer of freedom. Visiting a secret swimming hole, they find more than the peace and quiet they expected. With a sabotaged truck, their only option is to make the journey back to civilization on foot. As night sets in, they quickly realize they aren't alone on the deserted stretch of road.
Now, they must fight for their lives and pray they can survive the night on the backroad.