The 17th book from the hugely popular early chapter book series to re-emerge with a new look! Brand-new eye-catching cover art brings a modern feel to this classic monster series for young readers. Liza is on her way to the local stables when she slips on the snow and hurts herself! Out of nowhere, a sleigh pulled by a white unicorn appears and takes her all the way to the stable. Her friends don't believe it was really a unicorn; Liza must have been seeing things! But Liza is determined to prove that she knows what she saw!