There are 3 books in the Castles in their Bones series.
The next book in the Castles in their Bones series, Poison in Their Hearts (Book 3), will be published in June 2024.
The first book in the Castles in their Bones series, Castles in Their Bones, was published in February 2022.
The Castles in their Bones series primarily falls into the Epic Fantasy and Fantasy Romance genres. This young adult series was written for ages 12-17, but can be enjoyed by adults too.