Clive Gifford is an award-winning author of books for children and adults including the astonishing Dead or Alive, the creepy Book of Bad Things and the brain mangling Think Again and Eye Benders. He is passionate that books should entertain, inform and amaze whenever possible. A contributor to Encyclopedia Britannica, Clive's books have won School Library Association, PBS, Smithsonian and Times Educational Supplement, as well as the prestigious Royal Society Young People's Book Prize.

Tracy Worrall produces a huge range of artwork using both digital and traditional media who has been exhibited in Berlin, London and Liverpool. She produced animations for an award-winning educational television series for the Discovery Channel. Tracy lives in Liverpool.