To unravel any mystery, find the knot. When Delphine, a young orphaned dressmaker mouse living in the walls of Cinderella's château, stumbles upon an enormous secret, it upends everything she thought she knew: The magical tailor mice of legend really existed. Racing to stay ahead of King Midnight, the fearsome leader of the rats who is bent on harnessing age-old magic, Delphine embarks on an epic quest to uncover the truth about the past. Joined by Alexander, the most pompous noblemouse in the royal court, she travels a perilous route, encountering strange enemies and unlikely allies along the way. Can Delphine uncover the truth and save the kingdom? Or will the evil King Midnight succeed in harnessing the power of the tailor mice? This action-packed novel is sure to be a hit with readers who like magic, adventure, and very tiny heroes with very big hearts.