The second book in the acclaimed 'Echorium Sequence'.
In a world where the slightest whisper can bring down an avalanche, black crystal threatens to destroy the balance of power. It's a race against time and their own fears, if Renn, the Novice Singer, and Shaiala, a feisty girl raised by Centaurs, are to conquer the evil that has enslaved half-creatures and Two-Hoof children - a power that can bend minds and steal memory.
