Mary is the Queen of Scotland and the jewel of the French court. Except when she’s a mouse. Yes, dear reader, Mary is an E?ian shapeshifter in a kingdom where Verities rule. A small obstacle, to be sure, but one that could cost her a head—or tail. Luckily, Mary has a confidante in her betrothed, Francis. They’re next in line for the throne, but what used to be a pleasantly far-off prospect is suddenly a little close for comfort. Francis has no interest in being king, and Mary may have a spy in her midst—by the name of Ari Nostradamus. The daughter of the world’s greatest seer and Mary’s newest lady-in-waiting, Ari never predicted she’d be privy to the kingdom’s mousiest secret. But when the king meets a rather suspicious end, things at the gilded court take a treacherous turn. Mary and Francis are thrust onto the throne, and Ari must decide whether to save her own head or help her royal mistress navigate a viper’s nest of conspiracies, traps, and treason. And if Mary’s secret is revealed, heads are bound to roll.