The Recruit and The Dealer by Robert Muchamore (CHERUB books 1 and 2)
The Demigod Diaries
Guys Read: True Stories by Jon Scieszka
Paws Off, Cheddarface! and Red Pizzas for a Blue Count–Geronimo Stilton books 6 and 7
The Underland Chronicles, books 1-5 by Suzanne Collins