Blood & Merrow by J J Falconer — book slip

For two hundred years, Ellet has been bound to his sadistic creator, Embla.

When she enters a centuries-long slumber, he seizes the chance to flee to 1860 Pensacola, determined to feed on the most depraved and build his strength enough to defeat his sire upon her awakening.

One night, the ocean introduces him to Naia, a predatory and ancient Merrow whose dark appetite rivals his own. Their supernatural powers have no effect on each other, igniting an intoxicating connection between them.

As Embla awakens, threatening their love and lives, Ellet must return to the clutches of his creator and unravel a millennium of lies.

For fans of Katherine Arden and Harley LaRoux.