Wren Ashgrove broke the first rule of her coven to save her dying sister — and bound her magic, forever, to the one man forbidden to love her back.

Alastor Vane has spent a hundred years paying for the last time he loved someone at full strength. Exiled, half-bound, and alone in a crumbling castle, he never expected a reckless hedge witch's forbidden spell to fuse her power to his — or to make him feel, for the first time in a century, dangerously, wonderfully alive. But their bond isn't just illegal. It's a death sentence waiting to happen again, unless they can unravel a hundred-year-old lie before the same enemies who destroyed him once finish the job.