The Sunday Times Best Children’s Books for Easter picked Andy Stanton’s fourth book: ‘The style of Mr Gum and the Power Crystals (Egmont £4.99) is entirely different – nonsensical, idiosyncratic, proceeding randomly, and full of yucky stuff – but moral, too. Although all is played for laughs, including the scribbly pictures by David Tazzyman, friendship matters, good triumphs and sacrifice is noble. This fourth book pits series heroine Polly against nasty Mr Gum to overcome a historical curse.’