Serena Blackstone, a non-magickal mundane, is the new librarian at Strange Castle. Irresistibly drawn to the dark and dangerous Dungeon Master, Invictus Cross, Serena sets out to seduce him. Invictus Cross takes her up on her invitation with the intent of discouraging the sexy mundane. She shouldn't be at Strange Castle and she shouldn't be with him. His dark past is sure to come back to haunt him and he doesn't want Serena caught in the crossfire. Serena is shocked by Invictus' sexual demands, but rallies to the challenge. After all, her enchanted robe has revealed that Invictus Cross is her one true love. And for that, she'll put herself at his mercy . . .