This collection includes:Book 4: Here's the Naughtiest Girl There's a new boy in Elizabeth's class, who'll do anything to show her up. It's hard for the naughtiest girl to keep her temper when faced with such a challenge ...Book 5: The Naughtiest Girl Keeps a Secret Elizabeth's efforts to put her naughty days behind her are threatened when John trusts her with a secret. She finds herself in more trouble than ever before.Book 6: The Naughtiest Girl Helps a FriendIt's hard to be good at camp with Arabella in the same tent. She's causing all sorts of problems for Elizabeth and her best friend Joan.Book 7: The Naughtiest Girl Saves the DayElizabeth is a suspect when some plants are vandalised. She isn't to blame - and who would want to get her intro trouble? With help, she vows to get to the bottom of the mystery.