In her search for a mythical ring to break her brother Cabell's curse, Tamsin saw the Avalon of Arthurian legend fall and the two people she trusted most betray her. Now, back in the mortal world, the stepfather she thought was dead has returned with a warning: Tamsin is the one who is cursed. Meanwhile, Lord Death is harvesting souls with his Wild Hunt and Cabell by his side. To stop him, Tamsin must find the legendary 'Mirror of Beasts' - even if it means enlisting the help of Emrys, her rival-turned-lover-turned-enemy who abandoned her in Avalon.