Holly Black is the author of bestselling contemporary fantasy books for kids and teens. Some of her titles include The Spiderwick Chronicles (with Tony DiTerlizzi), The Modern Faerie Tale series, the Curse Workers series, Doll Bones, and The Coldest Girl in Coldtown.

She has been a finalist for the Mythopoeic Award and for an Eisner Award, and the recipient of both an Andre Norton Award and a Newbery Honor. Her new books are The Darkest Part of the Forest, a return to faerie fiction, and The Iron Trial, the first book in a middle grade fantasy series, Magisterium, co-authored by Cassandra Clare. Holly currently lives in New England with her husband and son in a house with a secret door.

Rovina Cai is a freelance illustrator who works across a variety of genres. Her poetic imagery has served as book covers, posters and interior art for novels and picture books.

She recently won the World Fantasy Award for best artist. Her work has also been recognised by organisations like the Society of Illustrators, and the Children's Book Council of Australia. Rovina works out of a cosy studio in Melbourne, Australia, in an old building that was once a convent and is possibly haunted.