'A dark secret is tearing Tremaris apart. From the frozen Bay of Sardi to the endless winter of Antaris, sickness is spreading and even the seasons are slipping into chaos.
Calwyn has lost her powers of chantment and flees back to Antaris. But instead of sanctuary she finds the community ravaged by a mysterious snow-sickness and torn apart by tyranny. When she learns that Darrow, too, has been infected, Calwyn begins a desperate race through the frozen forests. But will she find the answers in time to heal him? And will she have the courage to embrace the dark magic and save Tremaris?
The Tenth Power brings the Chanters of Tremaris series to an enthralling conclusion.