Horrid Henry and his friends put forward their most dastardly dares and side-splitting jokes to prove once and for all that boys rule. But little does Henry know that Moody Margaret has plans of her own, resulting in a hilariously horrid showdown!

Filled with witty comments and acerbic asides from Henry and Margaret's friends, enemies, families and teachers, along with brand new Tony Ross illustrations, this book should keep Henry's (and Margaret's!) fans mischievously quiet.