I'm actually going to sway away from popular opinion on this one. Even though it’s by no means a bad book, it’s not great either.
Desperation is certainly more of a gore-fest rather than a psychological horror. The book begins with a couple driving through a desert. As the pass a sign, they notice a dead animal nailed to it, this is the first scare, then a cop pulls them over, and then BANG! You’re into the action immediately. The story certainly starts very quickly, no time building characters or the scene too much with this one, oh no, the horror is fast paced and I’m sure that almost everyone will find the first 100 pages impossible to put down. But this is the big problem. How do you sustain this kind of pace for 700 pages? Simply, you cant. This is very disappointing, as I thought the first part really was some of the most intense storytelling that I’ve read in a long while, unfortunately, you pay for this because the story really does begin to drag a bit from there on in.
If you like blood, guts, severed limbs, and basically just downright gore, gore and throw some more gore in, then you wont be disappointed with this. But if you looking for a more psychological horror, then I suggest maybe Bag of Bones also by King.
A good horror story that maybe drags on a little too long, and maybe the horror is too in your face (which in my opinion is much less scary most the time) for some, but don’t let it put you off. A good read nevertheless, maybe a slightly average story made better by a great author.