What is the author's style in Salem's Lot by Stephen King?

The narrator's style varies through the story, as do the characters' styles of speech. The narrator narrates quite a bit of the story as an interested onlooker would, reporting the action with adjectives and adverbs that demonstrate the narrator's slight bias, showing sympathy for good characters who are in pain and bluntly reporting the truth of what the antagonists have done and how their actions affect the townspeople. At no time does the narrator seem to feel sorry for the vampires, except perhaps for one moment in reporting that the vampire Susan looks very unhappy.