The Stone Key

First Published:
Australia: Penguin, 2008
US/Canada: Random House, 2008 [Divided into two separate books for US/Canadian release: "Wavesong" and "The Stone Key"]
 
When Farseeker Guildmistress Elspeth Gordie sets out from Obernewtyn to travel to Sutrium at the end of Wintertime, she quickly learns that not everyone welcomes the changes brought about by the rebellion. Captured by an old and vicious enemy, she is drawn deep into the heart of the Herder Faction, where she learns of a terrible plot to destroy the west coast.

To stop it, Elspeth must risk everything, knowing that if she dies, she will never complete her quest to find the weaponmachines that destroyed the Beforetime.