I LOVE this series. Although the Uglies/Pretties/Specials/Extras series is more popular, I actually like this series better. It's about five teenagers who are the only people that can move during "the secret hour", when everything else in their town freezes at midnight. Although a bit weird, the story is very exciting and the characters are well-developed. Scott Westerfeld is one of my favorite authors, and these books did not disappoint me.