This series was recommended to me in a comment, and I’m really glad that I read it. When I picked up the books at my library, I really didn’t expect much. Four short books, only about 100 pages each. I finished the whole series in the space of about four or five hours and from the first chapter I couldn’t put it down. They were well written and very gripping.
(Sorry this is so short; I don’t really know how to describe these books without totally confusing everyone who reads this.)