The Rules of War, 5

The final war is on the horizon. Years ago Renaldo would have said all is fair in love and war. Now he's sure nothing is. His husband, Casto, has left him, and without his touchstone, Renaldo cannot control his powers. The loss could not come at a worse time. The Good Mother and her followers are stretching out in a power grab, dividing the forces of the Gods of War and putting their victory in jeopardy. Meanwhile, Casto has reached the ancient city of Quell'renar, where raw magic has been burned so deeply into the fabric of creation that no one can stay for any length of time. Delving into the past the city reveals to him shows Casto that he and Renaldo are not so different. But even if he accepts his role as Renaldo's heart, there's a long way to go before he'll find any peace. Because Quell'renar itself is speaking to him, driving him to the brink of insanity....