Charming comedy from Malorie Blackman. Two friends have to cope with a very challenging babysitting job when Mike discovers his friend Alex can turn into living creature he wants – but so can Alex’s naughty little sister Polly!

Mike had no idea that his best friend Alex was a Gris-Kwok – he can turn into any living creature he chooses. But so can Alex’s naughty little sister Polly, and it’s not long before Mike and Alex are dealing with a whole heap of trouble!

A hilarious and thrilling read. Particularly suitable for struggling, reluctant and dyslexic readers.