Guardian by Lindsay McKenna
To find his future, he must uncover the sins of the past!
A Templar knight in a past life, Nicholas de Beaufort has no desire to inhabit his former human body again. But when he's ordered to return to his human form to guard Mary, a woman with a special purpose, he has no choice. Unsure of his new mission, Nicholas is only certain of the scorching lust Mary ignites in him...
Yet when an unexpected threat surfaces, Nicholas's quest becomes clear. He must protect the woman he can't live without - in order to win the battle that could save humanity.