How many books are in the Ulysses Moore series?

There are 11 books in the Ulysses Moore series, written by Pierdomenico Baccalario.

Here is a list of the books in the series:

1. Ulysses Moore: The Secret of the Knights

2. Ulysses Moore: The Secret of the Runes

3. Ulysses Moore: The Secret of the Pharaohs

4. Ulysses Moore: The Secret of the Lost City

5. Ulysses Moore: The Secret of the Ancients

6. Ulysses Moore: The Secret of the Labyrinth

7. Ulysses Moore: The Secret of the Templars

8. Ulysses Moore: The Secret of the Dragon

9. Ulysses Moore: The Secret of the Sphinx

10. Ulysses Moore: The Secret of the Atlantis

11. Ulysses Moore: The Secret of the Guardians

Let me know if you want to know anything else about the series or the books themselves! 😊