Long has it been since the ending to a story gave me a chill, but this one pulled it off. I guess it's a common theme, but it still caught me by surprise, and the story was all the richer for it. 
 We also have the most realistic character so far in the Night Shift collection (sixth story in). He's kind of detestable, but I've met people like him, and he's quite realistic. Another great thing is that this story reminds me of It, my favorite SK book. I can see some themes, or devices in this that are more fleshed out in It, and I like finding those little Easter eggs. 
 Check it.