In this hilarious third book in the Middle School and Other Disasters series, witch-in-training Heidi Heckelbeck struggles to keep a secret. Featuring black-and-white illustrations and doodles throughout and sparkly foil on the cover!Heidi is making new friends at Broomsfield Academy--in particular, a popular girl named Isabelle. But it turns out Isabelle has a big secret that Heidi discovers by accident! Heidi promises to keep the secret, but as more time goes by, it becomes more and more difficult...especially with nosy Melanie Maplethorpe snooping around. This secret is huge. Will Heidi be able to keep her promise?