(From the publisher):
Something has happened to the heart of Aldenmor. The Fairy Glen has vanished! New animal refugees are arriving in Ravenswood, including a mysterious and wild unicorn. The creature is frightened, confused - and wounded. Emily must face her greatest challenge to try and save the unicorn and learn its incredible secret. What special magic does it hold? If Emily can't find a way to understand it, she just may uncover the most important clue yet to discovering her destiny and finding Avalon.
Original title: Secret of the Unicorn
Genre: Fiction→ Children & Young Adult→ Fantasy→ Fantasy Worlds