Sally Gardner is a multi-award-winning novelist whose work has been translated into more than twenty-two languages. Her novel MAGGOT MOON (Hot Key Books) won both the Costa Children's Book Prize and the Carnegie Medal 2013, and was followed by THE DOOR THAT LED TO WHERE. Sally's genre-defying novel THE DOUBLE SHADOW (Orion) received great critical acclaim and was also longlisted for the Carnegie Medal 2013. THE RED NECKLACE (shortlisted for 2007 Guardian Book Prize) and THE SILVER BLADE, the film rights for which have been purchased by Dominic West, are set during the French Revolution. Sally also won the 2005 Nestle Children's Book Prize for her debut novel I, CORIANDER. She is also author of the popular Wings & Co Fairy Detective Agency series and TINDER, illustrated by David Roberts (Orion). Most recently she has published a novel for adults, AN ALMOND FOR A PARROT. Follow Sally at www.sallygardner.net or on Twitter: @TheSallyGardner

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.