Sorcerer's Moon

For sixteen years, King Conrig Ironcrown has battled to preserve the Sovereignty he imposed over High Blenholme Island and repel the invading Salka monsters. His hopes rest on Prince Orrion, his heir - whose betrothal should bring peace. But Orrion is determined to marry his childhood sweetheart - and would rather forfeit his life than wed the barbarian princess chosen by his heartless father.
In the devastated kingdom of Moss, the Salka are hunkered down - and planning the reconquest of "their" island. A shaky interval of peace has been broken only by skirmishes with these monsters. But the Salka's audacious new battle plan will keep them undetected until they vanquish the human settlements on Terminal Bay - while their reserves secure a beachhead and their main force seizes the heart of High Blenholme.
With his scheme for his son Orrion in ruins, King Conrig - his magical powers weak - is more vulnerable than he realizes. Years of opposing the Salka and his human enemies have undermined his sanity. With his dreams of extending his Sovereignty beyond this island fading away, he'll be even harder to control. Once again, he is preparing to use the foulest Beaconfolk sorcery to counter the monsters' massive invasion.
As battles rage, the only chance for peace lies deep in King Conrig's past. His former spy, Deveron Austrey, has secret magical powers - and no love for the Beaconfolk. And while the King's first wife is largely unremembered, she has not forgotten that her son is the true heir to the throne of High Blenholme.