Strong start, weak finish. 
 Perhaps it was the nostalgia, sitting by the pool and reading this book, remembering how I did the same thing as a teenager, reading books by the author's father (Stephen King), but I enjoyed the opening and the set-up. Hill's characters' felt like they walked right out of a King novel and the prose has a similar directness, sprinkled with references to pop culture (particularly music). Early on, there was good tension and some legitimately spooky scenes. 
 Unfortunately, it plateaued pretty quickly. Felt like hundreds of pages of the same thing. I kept hoping he'd up the ante, surprise me, anything, but I was disappointed.