The Mysterious Crown Prince (Paperback) (ISBN-13: 9780645234640)

He's the Crown Prince no one has ever seen, possibly the kingdom's most-wanted thief, and most definitely, the killer's next target.

There is no way Seraphine is making it into the most-prestigious Royal Princess Academy, until she miraculously does. But when a murder shakes the Royal Prince Academy next door, she illicitly trades her tiara for a magnifying glass and starts investigating - along with a group of unlikely new friends.