Devil's Domain — Tim Champlin

There was a reason people called Andersonville Prison hell on earth. With more than thirty thousand Union soldiers held captive in the worst conditions possible, death and disease were daily visitors. If scurvy or starvation didn't kill them, the guards would. Sergeant John Mulroy knows he'll die if he doesn't find some way to escape. Problem is, even if he does get out, his closest ally suffers bouts of madness and just may murder him anyway....