Jillian Harker ; illustrated by Ann Johns. Gillian Lobel ; illustrated by Gaby Hansen. Ghillian Potts ; illustrated by Jan Lewis. Gillian Cross ; illustrated by Tim Stevens. Dominic Barker ; illustrated by Hannah Shaw by Ali Sparkes ; illustrated by Ross Collins. written by Jillian Harker ; illustrated by Pamela Venus. illustrated by Ann Johns. written by Jillian Harker ; illustrated by Caroline Pedler. Jane Clarke ; illustrated by Garry Parsons.