For being a teen horror/fantasy book with somewhat stereotypical American teenage protagonists, these books are quite compelling. The characters actually do manage to be more than two-dimensional, and Julian is a most intriguing antagonist. I love the love/hate bond between him and Jenny, and I like how Jenny's character develops over the course of the books as much as I like how Julian grows and changes. There's some good world-building and mythology/folklore involved, and it works well as a trilogy. A good read, no matter your age.