About the Author

Anthony Horowitz is an award-winning children's author, writer for television and creator of the phenomenal bestselling Alex Rider and Power of 5 series as well as the Diamond Brothers Detective books – all published by Walker Books. He is also the author of The House of Silk: The New Sherlock Holmes. He lives in central London, EC1. Antony Johnston is an award-winning author of more than a dozen graphic novels in everything from horror to romance, and has also written video games, books and animation. He has reinvented Marvel's flagship character Wolverine for manga, and adapted many of Alan Moore's prose works into comic form. He lives in Barnoldswick, Lancashire.

Kanako and Yuzuru, two sisters from Japan, collaborate to produce manga-style art for comics and graphic novels. Yuzuru is an illustrator and lives in Tokyo; Kanako is a graphic designer and lives in London.