Immortal - Pine Barrens, #1

When the corpse of an unidentified species is found in the woods near Pine Haven, New Jersey along with a human female, anthropologist Edie Campbell is called in by local law enforcement and the medical examiner to help identify the strange humanoid male. The discovery of a heretofore unknown species is thrilling for Edie, up until she realizes the creature recently mated with the human female. Questions for with no apparent answers until Adian LaMont arrives in Pine Haven to identify his cousin's body.
But the secretive Aidan hides as much of the mystery surrounding the strange creature as he explains, and Edie has no doubt that behind the heat in his amber eyes, he knows much more than he's willing to tell.