Now a MAJOR MOTION PICTURE starring Michael Caine, Russell Brand and Matthew Goode. Rosalind is the eldest sister. Robbie is her younger brother. Smash is their stepsister - and she isn't too happy about it! Maudie is the baby of the family. Now you've met the four children. But what is IT? A number one bestselling story of four children who discover an extraordinary way to make wishes come true, inspired by E Nesbit's classic, Five Children and It.