The Last Vampire by Whitley Strieber hardcover

Miriam Blaylock knows the secrets of civilization, the mysteries of life—and the agony of undeath. For centuries, she has traveled the world undetected. Until now. Interpol agent Paul Ward has cleansed continents of vampires, orchestrated the extermination of an ancient lair, and obtained their sacred Book of Names. He knows where they hide. He knows when they feast. And he knows their weaknesses. But he has a weakness of his own: Miriam.  Cunning and elusive, she has escaped his complex network of hunters for years. Toxic and seductive, she has become his obsession. Now, predator is about to become prey. Killer to become lover. Good and evil will become inexorably entwined as the endgame begins for the last vampire.