Books in the Shadow chaser series

Zithembe has to find his knife to rescue his mother from the evil Army of Shadows. The only way to find it is to go to the Lake of Memories in the dreamworld, where it guarded by the evil Mama Wati water spirits. Without a knife of his own, Zithembe can't go to the dreamworld, so his friend Nom and his cousin Rosy have to take their lives in their hands to help him … Lake of Memories is the second book in the Shadow Chasers trilogy. It's an African fantasy adventure ¿ one part family saga, one part hero's quest.