Darkyn series by Lynn Viehl

If Angels Burn

SHE RESTORES THE LIGHT OF HOPE. Dr. Alexandra Keller is Chicago's most brilliant reconstructive surgeon. HE DWELLS IN SHADOW. Michael Cyprien is New Orleans's most reclusive millionaire--and in desperate need of Dr. Keller's skills. A NEW DAWN AWAITS THEM BOTH. . . . Beneath the foundation of a mansion in the heart of the Garden District, Alexandra will perform an illegal surgery. Her patient's disfigurement is beyond medical repair. But his body's ability to recuperate from his wounds borders on the miraculous. Alexandra knows Michael Cyprien is no ordinary patient. Intrigued by how his remarkable physiology might benefit medical science, she is even more compelled by his presence--and the mystery surrounding him and his associates, a cadre of immortals who call themselves the Darkyn.
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Kyndred series by Lynn Viehl

Shadowlight

With just one touch, Jessa Bellamy can see anyone’s darkest secrets, thanks to whoever tampered with her genes. What she doesn’t know is that a biotech company has discovered her talent and intends to kill her and harvest her priceless DNA. . . Gaven Matthias is forced to abduct Jessa himself so he can protect her, but Jessa has a hard time believing the one man whose secrets she can’t read. As a monstrous assassin closes in and forces them to run, Jessa will have to find another way to discover if Matthias is her greatest ally—or her deadliest enemy.
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Lords of the Darkyn series by Lynn Viehl

Nightborn

The High Lord of the Immortal Darkyn has sent his most trusted warrior, Korvel, to retrieve a coveted scroll that's rumored to contain maps to Templar treasures and the secrets to eternal life. Uniting with Korvel to recover the dangerous artifact is Simone Derien, the daughter of the scroll's guardian, and a woman with many deadly secrets...
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