I read copious quantities of horror and suspense books, especially Stephen King's, but this one is one of the very few that has actually given me nightmares (another one was The Shining). The description of the airport terminal where things are not as they should be really gets the imagination going. There is great interaction between the different characters, with some of whom you get to dislike vehemently. Once the characters have worked out the situation in which they find themselves, I defy anyone to put the book down for wondering how they can possibly get out of it! All in all, an extremely good book with very powerful characters and a great ending!