Fourth of the thrilling fantasy adventure series set on the Dark World where society is ranked according to its colour clan & the most precious commodity is light. Tal & Milla are no longer alone in their quest. They have been joined by the rebel Underfolk led by Crow Tals old foe. But now they must all work together to discover the secrets of the Castle & the Dark World they all inhabit before it is too late. The darkness is growing deeper. The shadows are growing stronger. & Tal & Milla are in greater danger than ever before!