Night Life by Elizabeth Guest

"Ancient Egypt takes a bite out of modern-day Las Vegas.

Once a pharaoh, Adrian King has awakened thousands of years later-as a vampire. Now the owner of the Royal Palace in Vegas, he is falling for Egyptologist Christine Day. But others have awakened who will not rest until Adrian is destroyed again, even if it means taking the only true love he's ever known." (From Amazon.com)

Paperback Info: ISBN 0425214826, Berkley, 2007