Crystal Mask - The Echorium Sequence Author:Katherine Roberts A wild girl, a horselord prince, magical creatures, the rumored return of the dreaded Khiz priest, and an awesome challenge to the power of the Singers make for a thrilling sequel to the award-winning SONG QUEST. In a world where the slightest whisper can bring down an avalanche, itšs a race against time, and a race against onešs own fears.