Did you know that trolls use their ugly appearance to scare humans? Some trolls can have more than 12 heads. Learn more about these mythical creatures in Trolls, part of the Legends and Fairy Tales series Legends and Fairy Tales is a series of AV2 media enhanced books. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slideshows, activities, hands-on experiments, and much more