The Pagan Stone Bk 3 – Sign of the Seven Trilogy – 2008 by Nora Roberts

Years ago, three friends unwittingly unleashed a terrible curse on their home town. Now, in this thrilling conclusion to the Sign of Seven trilogy, their final battle begins. Gage Turner has been running from his past for a long time. Now he has returned to help his blood brothers and to save his home town. To succeed, Gage must open his heart to the clever and beautiful Cybil, with whom he shares a powerful gift. But a lifetime as a loner has made Gage wary of emotional ties...