Wishyouwas is back with another mystery to solve in a twisty, turny, modern-classic crime caper that will delight fans of animal adventure and enchanting underground worlds

It's 1953, just days from the coronation of Queen Elizabeth, and Penny Black can't get into the summer holiday spirit. Not when she's about to move to Scotland – and away from everything she knows – for good. But when Wishyouwas plops into the fireplace in a cloud of soot and chaos, with a summons from the Royal Postmistress herself, all of Penny's plans suddenly go up in smoke. The intrepid pair are soon on the trail of a mysterious traitor and a potentially deadly plot to halt the coronation. Their investigation will take them across London's busy streets, high up in the air and deeper into danger than they've ever been before …

"An instant classic" - Piers Torday on WISHYOUWAS

"A lovely and enchanting read. Letters, intrigue, cute furry creatures – nine-year-old me would have turned to this charming book over and over again!" - Lesley Parr on WISHYOUWAS

"A whirlwind adventure unfolds from the moment that lonely Penny Black helps a mysterious furry creature escape from a mousetrap in her uncle’s post office. Rich in wordplay, this is a magical and cleverly created world of make-believe" - Julia Eccleshare, LoveReading4Kids on WISHYOUWAS

"A first-class festive adventure" - Daily Express on WISHYOUWAS

"One of those magical stories that just wraps itself around your heart and gives you a warm glow" - Margaret Pemberton, Books for Keeps on WISHYOUWAS