THEIR LOVE IS FORBIDDEN. Healer and high priestess of her people, Lady Cael is fated to life without a mate. But a mysterious explorer named Lucan Rourke doesn't know her secrets, and his touch makes her crave a future that her extraordinary birthright has forbidden her...BUT DANGER IS NO MATCH FOR DESIRE. Lucan has just one mission on Pendragon: to find the mythical Holy Grail, Earth's only hope for survival. His powerful attraction to Cael is a distraction he can't afford, unless he convinces her to join forces with him. Yet working so closely together only heightens their passion... even when the terrifying truth of Cael's heritage threatens to shatter Lucan's every belief-and the galaxy itself.