It's embarrassing enough that Oliver's dad has a new job at Magic School, but then smug new boy Casper starts showing Oliver up too. So when Casper challenges Oliver to a magical duel, Oliver agrees. Can he really beat clever Casper and avoid the scary forfeit?

1. Oliver Moon and the Spell-Off (2005)

2. Oliver Moon's Summer Howliday (2006)

3. Oliver Moon and the Potion Commotion (2006)

4. Oliver Moon and the Broomstick Battle (2006)

5. Oliver Moon and the Spider Spell (2007)

6. Oliver Moon and the Monster Mystery (2007)

7. Oliver Moon and the Dragon Disaster (2007)

8. Oliver Moon and the Nasty Vampires (2008)

9. Oliver Moon and the Troll Trouble (2008)

10. Oliver Moon's Fangtastic Sleepover (2009)

11. Oliver Moon and the Batty Birthday (2009)

12. Oliver Moon's Christmas Cracker (2010)