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 embattled and vastly outnumbered. The power in Silas is growing, spurring each to gather forces to battle for his destiny--and the side of Shadow has a long head start. One angel can only do so much to help. And as far as Silas knows, he's on his own.