"To avenge a centuries-old betrayal, Gaios is hell-bent on summoning the elemental forces of the earth to level London and bury Britain. The Crown and Key Society, a secret league consisting of a magician, an alchemist, and a monster-hunter, is the realm's only hope-- and to stop Gaios, they must gather their full strength and come together as a team, or the world will fall apart"--Page 4 of cover.