The young sorcerer Cally has routed the Mallish invaders from Collen, the home of his love Myla. For the first time in a long time, the land is at peace.

But few believe it will last. Brought before Collen's highest authority, the Pastkeepers, Cally is told a deep secret: the Rod of the Devil's Tongue, the artifact he used to defeat the Mallish, has even greater powers than he knows. If he can unlock them, he can drive the Mallish out of Collen forever.

Under the Pastkeepers' watch, Cally and Myla travel to Ilonia, the city of canyons and canals. There, they learn that if they want to unleash the rod's full strength, they will have to tame the soul of the devil trapped inside it.

But the Three Tamings are a dangerous task. Filled with dark mysteries and grotesque monsters, the ordeals threaten to drive Cally mad. As his mind frays, Mallon stirs. If Cally can't take the devil's power for himself, Collen will fall.

A tale of war and love among two young sorcerers, THE THIRD SCOUR is the boisterous finale to The Cycle of the Scour series.