"It is five days until Christmas and Winston has a Very Curious Mystery to solve. He has hazy rememberings of another mouse, and he just knows that someone very important to him is lost. After promising Oliver that he will be back in time for Christmas no matter what, Winston sets out on an exciting round-the-world festive adventure to find the missing mouse, helped along the way by wonderful old friends and delightful new ones, too. A Christmas mystery written in 24-and-a-half-chapters, one to enjoy every day of December in the lead up to Christmas. Each chapter includes it's very own festive activity for all the family to enjoy together--including making decorations, Christmas food, discovering Christmas traditions from around the world, and so much more!"-- Provided by publisher.