A hilarious and moving story of old age, adventure, stolen jewels and swimming the Thames, from from David Walliams, number one bestseller and fastest growing children's author in the country. "I absolutely love David Walliams's books. In a few more years they will become classics." - Sue Townsend, author of Adrian Mole Our hero Ben is bored beyond belief after he is made to stay at his grandma's house. She's the boringest grandma ever: all she wants to do is to play Scrabble, and eat cabbage soup. But there are two things Ben doesn't know about his grandma. 1) She was once an international jewel thief. 2) All her life, she has been plotting to steal the Crown Jewels, and now she needs Ben's help...Review"In this gem of a book, Walliams balances high comedy with an emotional message" - Daily Mail "Anyone who thinks that all grannies do is wear mauve and play Scrabble will laugh out loud" - Telegraph "Hugely entertaining... a comic, touching and at times sad story" - Daily Express "This is possibly David's funniest book ever." - Heat "David's fourth novel confirms his reputation as the Roald Dahl of his generation." - Woman's Way MagazineAbout the AuthorDavid Walliams is currently the fastest growing Children's author in the UK. His books have been translated into over 25 languages and have sold over one million copies in the UK alone. His fourth book, GANGSTA GRANNY, and his fifth book, RATBURGER, both immediately went to number 1 in the children's bestseller chart. Walliams' books have achieved unprecedented critical acclaim, often drawing comparisons to those of his all-time hero, Roald Dahl.