If you want to read my actual review of this book, then click this link. This is me telling an alternate summary of the book by using the cover alone.
While wandering through the woods, Sydney, Mac and Layla come across an old, rusty, abandoned carousel. It suddenly lights up and begins to spin. There sitting on a horse is the caretaker of the ride, named Ames. He tells the teens that they can walk away with their lives intact if they can answer a riddle: What is hot, filled with fire and waiting for Sydney's brother Peyton? While the answer is obvious, Sydney refuses to answer, because she doesn't like the answer. With no answer, the teens then experience a night of terror that no horror movie could ever live up to.