Elizabeth has a new teacher with a lovely name -- Miss Turtledove. But her name is the only thing lovely about her. She has purple hair, orange eyes,and hairy knuckles that scrape along the floor. Elizabeth knows right away what the problem is. Miss Turtledove is...a troll! Worse than that, she's a hungry one! Now Elizabeth has to find a way to reveal the truth about her teacher to her parents and the school administrators before Miss Turtledove's teaching techniques become even more hair-raising.