Silas Walker can heal the sick, but his gift has a limit--and a terrible price. He can't save the one person he loves most, and his power has embroiled him in a supernatural conflict that has raged since the beginning of time. Embittered and confused, he wants nothing to do with either side. But war won't leave him alone. A possessed man calling himself Demon Rick has made it a personal mission to make Silas suffer for his gift, and leaves a trail of bodies everywhere he goes to prove it. The only thing holding Rick back at all is the vigilance of Silas's unseen guardian angel, who is...