BOOK 2 OF THE AWARD-WINNING ECHORIUM SEQUENCE. The Echorium's enemies have been quiet for a generation, licking their wounds after the events of Song Quest. But now a new threat is emerging deep within the Mountains of Midnight. Once again, the Singers must use their Songs of Power to restore harmony to their world. As one of the few novices who can hear half creatures, Renn reluctantly teams up with the wild girl Shaiala who can kick like a centaur. Forced to leave the safety of the Isle of Echoes on a dangerous mission to find the missing centaur foals, they must learn to work together against their common enemy. For in a land where the slightest whisper can bring down an avalanche, the Echorium's Songs alone will not be enough to defeat an evil that makes children and half creatures into slaves. Crystal Mask is the second adventure in the Echorium Sequence and continues the epic saga that began with the author's Branford Boase award winning novel Song Quest. "A novel marked by rapidly paced adventure, fierce and costly fights, startling revelations and cataclysmic set pieces." Times Educational Supplement. "The kind of book where the more you read, the more you feel involved." Financial Times. "Reminiscent of Tamora Pierce's Immortals... this book should appeal to the same audience." Voice of Youth Advocates. There are currently three titles in the Echorium Sequence: SONG QUEST, CRYSTAL MASK and DARK QUETZAL. First published by Chicken House in the UK and Scholastic in the US, these full-length fantasy novels can be enjoyed by teens and adult genre fans.