Truth or Dare — K.R. Coleman

The town of Middleton is on edge after three kids go missing from their campground. Did they simply run away? Or did something more menacing happen? Nevertheless, Trey and his friends plan a camping trip to celebrate graduating from Middleton High. But when someone else goes missing, Trey begins to suspect that an otherworldly force is stalking the local lake. Can he and his friends escape before they, too, vanish without a trace?