Galloping glitter! A unicorn has landed in YOUR book! An engaging new adventure from the team that brought you There's a Monster in Your Book and its companions.Unicorns love to sing, but this unicorn isn't singing because a worry gremlin has crept in! Help unicorn up by using your finger wand and listening to its worries in this interactive book with an important social-emotional message about expressing your emotions. For more read-aloud fun in the Who's In Your Book series, look for these: There's a Dragon in Your Book, There's an Elf in Your Book, There's an Alien in Your Book, There's a Superhero in Your Book, and There's a Witch in Your Book! Tom Fletcher is one of Britain's bestselling children's authors (in addition to being a rock star!), and his YouTube videos have been viewed tens of millions of times.