Malorie Blackman¿s hilarious tale of shape-shifting and babysitting antics ¿ now in a standard paperback format for middle-grade readers.Malorie Blackman¿s hilarious tale of shape-shifting and babysitting antics ¿ now in a standard paperback format for middle-grade readers.Mike had no idea that his best friend Alex was a Gris-kwok ¿ someone who can turn into any animal he chooses! But Mike¿s naughty little sister Molly is a Gris-kwok too. Alex and Mike are about to take on the worst babysitting job in the world!