What can I say? I almost always enjoy Stephen King novels, and (I've said this before) I think he's one of the most underrated writers of our age. He has an uncanny knack of drawing you into whatever story he is narrating: you can see in your mind what he is writing, almost as if it is real, and experience a shock when you stop reading and have to think, hell, it's only a story... In Billy Summers he does this not once, but twice. In a sense that I'm not going to explain for fear of posting spoilers, this is not one book, but two, and both have the Stephen Kink immersive reading mark.
   It's only out in hardback as I write this (I got it as a birthday present), but when it appears in paperback, I recommend you add it to you collection.