Shadowland — Chitra Banerjee Divakaruni

The hero of the Brotherhood of the Conch series, now fifteen, is settling back into his life as an apprentice in the lush Silver Valley, nestled high in the Himalayas. There he continues to learn the secret arts of the Brotherhood. But suddenly his adopted home is reduced to a barren wasteland when his beloved conch, the valley's source of magical energy, is stolen by an unknown force. Together with his friend Nisha, Anand embarks on what may be his most dangerous mission -- traveling to the cold and forbidding world of Shadowland in his attempt to restore the conch to its rightful place, and his home to its original splendor. The third and final book in Chitra Banerjee Divakaruni's riveting series.