First published in 1975, Salem's Lot is one of Stephen King's earliest, and arguably best, novels. The plot revolves around a fiction writer who returns to his small Maine hometown of Jerusalem's Lot to get inspiration for his next book. As is usually the case in these situations, he gets more than he bargained for. It seems that Jerusalem's Lot is slowly being transformed into a town full of rather bloodthirsty creatures that seem to have jumped right out of old lore. It's up to the writer and a select few of followers to rid the town of this menace for good.
Salem's Lot is not exactly original, and Stephen King admits as much, having borrowed much of the story from the "Dracula" legend. But the book works for two reasons. First, King is able to make such an absurd concept amazingly believable. As is his usual style, he innodates us with complex but flawed characters that we can relate to. Second, the book is damn scary. I've read a good portion of King's work, and I don't think I've come across a more frightening novel.
While the plot strays moderately from the novel, Hooper manages to capture the feel of the book, not an easy task for a King tale. There's a growing inexplicable sense of dread from the very first minutes. Hooper is able to grab our interest without relying on quick edits and jump scares and without the benefit of CGI.
As mentioned, the miniseries takes some liberties. Characters are combined, eliminated or transformed. For instance, the main baddie, Barlow, is changed from an intellectual prowess to a Nosferatu-like demon. The "smarts" is instead passed to his very human second in command played by James Mason, who turns in the only memorable performance, sans the vampires.