Birthright by Nora Roberts

When five-thousand-year-old human bones are found at a construction site in the small town of Woodsboro, the news draws archaeologist Callie Dunbrook out of her sabbatical and into a whirlwind of adventure, danger, and romance. While overseeing the dig, she must try to make sense of a cloud of death and misfortune that hangs over the project-fueling rumors that the site is cursed. And she must cope with the presence of her irritating—but irresistible—ex-husband, Jake. Furthermore, when a stranger claims to know a secret about her privileged Boston childhood, she is forced to question her own past as well.