My Vampire Lord Lysander Thorne

Genetic researcher Eleanor Vance stumbles on an ancient text describing the vampire Lysander Thorne, a noble who was sealed away for a thousand years, and a method that might strip away his immortality. When her research wakes him, the bargain she offers is his freedom to become human again in exchange for his protection and help uncovering who killed her parents. Lysander must weigh his longing to escape a millennium of isolation against the dangers that path will bring, while Eleanor pursues a scientific cure and the truth behind her family's death.