Here research could cure his dark hunger if a covert government agent doesn't get to her first.

Vincent Maxwell is a vampire with a conscience seeking a cure to his dark hunger. But when a scientist looking to create vampire soldiers captures and kills a fellow vampire, Vincent seeks out Dr. Megan Harper, a research scientist who discovered a link between a genetic light sensitivity disorder and vampirism. Dr. Harper could hold a key to a cure and the answers to Gerard's death. But getting close to the beautiful scientist could endanger both their lives.

When Megan meets Vincent she believes he suffers from xeroderma pigmentosum, the genetic disease that killed her sister. Sensing a deep loneliness within the handsome man, she offers friendship and access to her research files. But she and Vincent soon become more than friends and Megan learns the horrifying truth. She's entered the dark and unseen world of vampires and Vincent is her only hope of survival.