The Last Enchantment by Mary Stewart
When the rose-gold witch Morgause, King Arthur's half-sister, ensnares him into an incestuous liaison to her own evil ends, a fatal web of love, betrayal, and bloody vengeance is woven.
We have this title in stock at our house in Chitose Hokkaido and can ship it directly to you now.
"No man knows till he has suffered from the night how sweet and dear to his heart and eye the morning can be." - Bram Stoker
© MMXXV