Enter Castle Chiaroscuro, where the Boy and his shadow, Skulk, have been separated and are desperate to find each other. Skulk must find his way up from the deep dungeons, solving a fiendish puzzle at every level. Be brave, bold and wise as you help Skulk navigate the Castle, from the darkest depths to the light at the top. The Castle is not what it seems – full of tricks and illusions, it will ensure this is a quest like no other. This unique and entirely original puzzle adventure book will test courageous puzzle fans to their limits!