A Halloween-themed, laugh-out-loud monster adventure in the Billy and the Mini Monsters chapter book series, perfect for newly independent readers aged 6+ and fans of Claude and Horrid Henry.

It's Halloween and Billy can't wait for the village Halloween Party. There's just one problem... his Mini Monsters are at the party too! Sparkle-Bogey's in the apple bobbing, Trumpet's in a pumpkin and Gloop's playing 'Guess the Body Part'. Can Billy find his monsters before anyone else does? Or will it be up to Peep to save the day?

Packed with colour illustrations, comic strips, maps and speech bubbles, with an action-packed plot, to appeal to even the most reluctant reader.

Collect all the books in the Billy and the Mini Monsters series!
1. Billy and the Mini Monsters: Monsters in the Dark
2. Billy and the Mini Monsters: Monsters go to School
3. Billy and the Mini Monsters: Monsters go Swimming
4. Billy and the Mini Monsters: Monsters on a Plane
5. Billy and the Mini Monsters: Monsters go to a Party
6. Billy and the Mini Monsters: Monsters Move House
7. Billy and the Mini Monsters: Monsters on a School Trip
8. Billy and the Mini Monsters: Monsters at the Seaside
9. Billy and the Mini Monsters: Monsters at Halloween
10. Billy and the Mini Monsters: Monsters Go Camping
11. Billy and the Mini Monsters: Go Green
12. Billy and the Mini Monsters: Monsters at Christmas