Biggest Secret Ever! (3) (Middle School and Other Disasters)

In The Third Book In The Series, Heidi Heckelbeck Is Settling In As A Witch-in-training At Broomsfield Academy. She Is Making Many New Friends; In Particular One Popular Girl Named Isabelle. But It Turns Out Isabelle Has A Big Secret, Which Heidi Discovers Accidentally. Isabelle Begs Heidi To Keep Her Secret And Heidi Agrees. But As Time Passes, It Becomes More And More Difficult. This Secret Is Huge. Will Heidi Be Able To Keep Her Promise?-- Provided By Publisher.