Are you ready to travel back in time to the year of 1940 with the No. 1 bestselling author David Walliams in this whizz-bang epic phenomena of action, laughter and mysterious secret plots! Discover the super special friendship between a little boy and a huge gorilla that just might save the day! During a crazy war between Britain and Nazi Germany, eleven-year-old Eric decides he will spend his days at the place he loves most... London Zoo. But there is one animal in particular that Eric adores most - Gertude the Gorilla! With bombs falling down over London, Eric must rescue Gertrude before it\'s too late. With the help of his Uncle Sid and a friendly keeper at the zoo, the three go on the run to save their amazing Gorilla friend! Until... oh no! The gang uncover a top-secret Nazi plot... Join David Walliams on this action-packed, laugh-out-loud adventure for all of the family - a must-read for all Walliams fans! Product Information: ISBN: 9780008305833 Author: David Walliams Publisher: Harper Collins Format: Hardback Pages: 480 Dimensions: 21.6 x 13.5 x 4.1cm