The twelfth in a smash hit series of hilarious tales about primary school life from best-selling, award-winning creators! Packed with excellent black and white illustrations, this is the perfect longer read for newly confident readers. Nothing is quite as it seems for Izzy and her friends, and the drama is always off the scale!Izzy's school is being merged with St Bartholomew's Primary, their greatest rivals! What will happen when the new kids join, in their too-shiny shoes and with their too-loud singing? And what if they've got a secret mission and that mission is a BAD mission?Only Izzy and her friends can discover the truth, even if they must go SO DEEP UNDERCOVER that they might not come back... Have you read these brilliantly funny Izzy and friends adventures?Baby Aliens Got My TeacherThe Spy Who Loved School Dinners - Blue Peter Award Winner 2015My Headteacher Is a Vampire Rat - Children's Book Award Winner 2016Attack of the Demon Dinner LadiesTo Wee Or Not To Wee!There's a Yeti in the PlaygroundThere's a Werewolf in my Tent - Lollies Shortlist 2019The Phantom Lollipop ManPraise for Izzy and friends:"Butchart has enviable comic timing and a shrewd understanding of how primary-aged children think, speak and speculate. Punchy short chapters, genuinely laugh-out-loud humour and Flintham's zany pictures make the series an absolute must." - The Bookseller"Good jokes and lots of fun, and especially good for reluctant readers." - Sunday Times