Michelle Harrison was born in 1979 and grew up in Grays, Essex. She has a degree in illustration, and is a former Waterstone’s bookseller and assistant editor at Oxford University Press. She now writes full time and has a son, Jack, and two cats.

Her first novel, The Thirteen Treasures, won the Waterstones’ Children’s Book Prize, has been sold in over sixteen countries and was followed by The Thirteen Curses and The Thirteen Secrets. She has also published Unrest, a stand-alone ghost novel for teens and is now working on a second young adult novel. Her latest book is One Wish, a return to the world of The Thirteen Treasures.

Khoa Le is an illustrator, graphic designer, and author based in Ho Chi Minh, Vietnam. She has been an illustrator for many picture books, as well as author of a few. Khoa has also participated in art exhibitions throughout Vietnam and Asia. She currently lives with her four cats. She has a passion for traveling and discovering different cultures and art.