Son of Rule - House Rule Series, #1

In Alin's immortal existence, he walks a precarious tightrope as the eldest of House Rule and the cunning strategist of the royal family. Juggling the cutthroat world of business and dispatching moartes leaves him little room for error, yet haunting memories from his past linger just beneath the surface. Trouble is a familiar companion, though Alin manages to sidestep most of its pitfalls-until a mesmerizing green-eyed human stokes the embers of an ancient vendetta, threatening to reshape the very fabric of destiny. Laci Mills, a quick-tongued editor, embarks on a business trip to Key West, only to stumble upon two startling truths.
First, vampires, contrary to skeptics, are genuine creatures of the night. However, they don't quite fit Laci's criteria for a successful Duval crawl, which she quickly discovers. Second, irrespective of their undeniable allure, being the center of attention for these enigmatic vampires proves to be more than a mere inconvenience.