Four hilarious new stories, in which Horrid Henry hits on a brilliant way to write thank you letters, negotiates over vegetables, competes with Perfect Peter over which of them is sickest, and finds himself wearing the wrong underpants, with dreadful consequences.

Four new stories: 'Horrid Henry's Invasion' - Horrid Henry and Perfect Peter keep invading each other's rooms. 'Moody Margaret's Sleepover' - Moody Margaret invites all the members of the Secret Club for a sleepover, with catastrophic results. 'Horrid Henry's Autobiography' - Miss Battle-Axe's class all have to write their autobiographies, the best to be published in the local paper. 'Horrid Henry Rocks' - Horrid Henry wants to go to the Killerboy Rats concert. His family has other ideas.

Four fabulously funny stories that will invoke every family's worst Christmas nightmares, as Horrid Henry sabotages the school play, tries to do his Christmas shopping without spending his pocket money, ambushes Father Christmas with some serious accusations, and endures Christmas dinner with the guests from hell.

Four new stories in which Horrid Henry terrorizes his classmates at a school sleepover in the museum; plays with Perfect Peter and tricks him into handing over all his money; gets out of writing his own story for Miss Battle-Axe by adapting one of Peter's; and meets the Nudie Foodie, a celebrity chef, who comes to the school to improve school dinners. No more burgers! No more chips!

When Horrid Henry gets nits and his little brother Peter Perfect doesn't, he makes sure that everyone else gets them too. After that, he can turn his attention to sabotaging the school trip, ruining his parents' dinner party, and terrorizing Peter.