Princess Protection Program #4: The Palace of Mystery

Carter Mason and the newly-crowned Queen Rosalinda have survived many adventures together. In these brand-new original stories, the girls are in for more royally good fun and a whole lot of intrigue as they help princesses around the world.
After weeks of diplomatic meetings, charity events, and royal balls, Queen Rosalinda is ready for a vacation. She's arranged for a short, private stay at her friends' home-an old palace in the European hills. And best of all, Carter will be staying with her! The girls are eager to explore the palace. But on their first night, Rosie gets an uneasy feeling. Are they being followed? When the palace staff blames the girls for a series of missing items, including a silver trophy worth millions, Rosie's worries are confirmed. Can she and Carter figure out who's behind the theft before anything else goes missing?