Outstanding!!! It's the sequel to "My Soul to Keep". I was absolutely glued to this book to the very end. Very different storyline...
Followup to My Soul to Keep, The Living Blood follows the story of Dawit and Jessica. After Dawit's disappearance, the sisters set up a clinic in Africa to treat children suffering from HIV/AIDS with the Living Blood. They are forced to flee to avoid assassination by Dawit's monastic brothers, and set up another clinic in a remote village, where they are pursued by a ruthless mercenary in the employee of a rich man seeking their unique blood.