Ally Carter

Five orphans. Two sword-wielding vigilantes. One mansion. No rules. April thought she had her happy ending. After all, she has her new house and new friends and new guardian. But she also has a very big new secret. The kids of Winterborne House are the only ones who know that Gabriel Winterborne--famous billionaire and terrible cook--is really a sword-wielding vigilante. What they don't know is that he's not the only one. When a masked figure breaks in, looking for something--or someone--it's clear that Gabriel has met his match, and now no one is safe. April and her friends will have to solve a decades-old mystery in order to hang on to the most important thing in the world: each other.

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