The hugely popular early chapter book series re-emerges with a new look! Brand-new eye-catching cover art brings a modern feel to this classic monster series for young readers.

It's springtime and the carnival is making its annual visit to Bailey City. Amidst the people working at the fair is a strange, stout woman with crazy red hair. The more the kids learn about this woman -- she hates loud noises, says trolls are her friends, can't stand the sun, and is always around when rides stop working -- the more certain they are that this woman is an evil troll who is there to ruin their carnival. Can the kids trick this troll into doing a good deed, thereby transforming her into a good troll, before she ruins everything?