Jeanne Willis, an author of books and television scripts for children of all ages, has now written over eighty titles including the Dr Xargle series, illustrated by Tony Ross. She lives in north London. Jan Fearnley grew up in South Shields, Tyneside. She studied graphic design and went on to teach at primary school before becoming a full-time author-illustrator. Her own picture books include Watch Out, Wilf! (9781844285099) and The Search for the Perfect Child (9780744565928), as well as numerous illustrated titles for other authors. She lives in Surrey.