Dr. John Bishop thought he'd seen his share of death on the Civil War battlefields. Then his quiet life was shattered when outlaws invaded his home, killed his family, and tortured him. Bishop's soul died that day, but his mangled body lived. A beautiful Cheyenne nursed him back to health, and a gunsmith outfitted him with a special shotgun rig where his left arm used to be. A strap across one shoulder fires it, while the chip on the other fuels his quest for vengeance.