For Leo, who discovered that even the deepest shadows hold a flicker of courage. May your closet doors always be firmly shut, and your imagination always be a shield against the things that go bump in the night. This story is for every child who has ever felt a chill crawl up their spine, who has ever peeked into the darkness with a mixture of dread and fascination, and who has learned that facing your fears, even the most monstrous ones, is the bravest adventure of all. To all the little heroes who brave the unknown, who find strength in their own bravery, and who understand that sometimes, the most terrifying monsters are just whispers waiting for a little light. Remember, the bravest of hearts often beat within the smallest chests, and every closed door holds a secret, waiting to be understood. Keep your doors shut tight, and your spirits bright.