The Anonymous Letters of C Forestier (French Letters, #3)

Paris, 1825. Isabelle de Tourzin cannot afford to fall in love with a mortal. Not again. Ageless and nearly invulnerable, she spends her days in private grief and plots to end Malbosc, the powerful, secretive man who seduced her only to leech her magic for more than a century.

She was rescued before she had the chance to kill him, and he's eluded her ever since. At last, Isabelle has in her hands a magic compass that will point her toward her quarry. Infuriatingly, a cunning stranger keeps ...