Centuries ago, Lucas made a deal with the underworld a blood oath that turned him into a demon. His punishment: harvest a hundred souls every year, and above all, never fall in love. For years, he roamed the earth empty and vengeful... until the day he met her. Lily is everything Lucas swore to destroy pure, kind, and untainted by darkness. But the moment their paths cross, something deep within him stirs something forbidden. He's drawn to her light, even as it threatens to burn away the monster he's become. Now, the underworld watches. His servants whisper betrayal. And every heartbeat he spends near her breaks the vow that binds his soul to hell. To love her means damnation. To leave her means death. And the demons never forgive those who break The Demon's Oath.