Year of the Unicorn by Andre Norton
On the first day of the Year of the Unicorn, twelve and one young women are to be delivered to the Wastelands beyond High Hallack and into the hands of sorcerous shape-changers known as the Were Riders. In battle, they change their forms into those of fierce animals, instilling terror in their opponents, then ripping them apart with tooth and claw.
The lords of High Hallack turned to the Riders in their desperate search for any defense against the unstoppable invaders from Alizon across the sea. The Riders agreed, but demanded payment of those brides-to-be, due on the first day of the new year following the war’s end.
Andre Norton’s novel, Year of the Unicorn, introduces Gillan, an orphan relegated to a dreary future in the abbey of Norstead, who instead exchanges herself in secret for one of the appointed brides. In disguise, she rides into the Wastes in search of any life beyond the one she seems fated to. There she finds her beastly groom and discovers her magical powers.
Since discovering how good Andre Norton’s Witch World series is, I’ve been slowly making my way through its sixteen books. (There are later books by other writers, but it’s Norton’s original writing that has hooked me.) The four novels and dozen or so stories I’ve read so far have ranged in style from wild science-fantasy to swords & sorcery to Gothic mystery. Some have even read like fairy tales from a world catty-corner to our own. Year of the Unicorn, first novel in the High Hallack sequence, is one of those.
As a child, Gillan was rescued at sea from Alizon raiders by a High Hallack nobleman. She was too young to know where she was from or how she came to be captured, but her dark hair leads him to believe she’s from the East. Deciding that if she was worth the Alizoners’ trouble she might have some future value, the nobleman raises her in his own household.