There are 39 books in the Heidi Heckelbeck series.
The next book in the Heidi Heckelbeck series, Henry Heckelbeck Camping Expert (Book 39), will be published in September 2024.
The first book in the Heidi Heckelbeck series, Heidi Heckelbeck Has a Secret, was published in January 2012.
The Heidi Heckelbeck series primarily falls into the Fantasy genre. This chapter book series was written for ages 7-10, but some older readers may still like to read these books.