Jack's Grandpa wears his slippers to the supermarket, serves up Spam a la Custard for dinner and often doesn't remember Jack's name - but he can still take to the skies in a speeding Spitfire and save the day. An exquisite portrait of the bond between a small boy and his beloved Grandpa this book takes readers on an incredible journey with Spitfires over London and Great Escapes through the city in a high octane adventure full of comedy and heart.