The hotly-anticipated next novel from number one bestselling author, David Walliams, with audio hilariously read by the author himself. Jack Grandpa. wears his slippers to the supermarket serves up Spam a la Custard for dinner and often does not remember Jack 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.

Illustrated by the award-winning Tony Ross.