Ah, poor Gage. I thought Sematary was an interesting genre exercise, but really King's gift is his ability to make characters feel real, which Sematary was more successful in. The horror trappings are an extension of his ability to illustrate what ordinary people do when terrible or extraordinary things happen to them, and that's why he can craft stories just as good even without anything particularly malefic happening - he's a great observer of life simply being lived.