Three

"The world has collapsed, and there are no heroes any more. But when a lone gunman reluctantly accepts the mantle of protector to a young boy and his dying mother against the forces that pursue them, a hero may yet arise."@en
""The world has collapsed, and there are no heroes any more. But when a lone gunman reluctantly accepts the mantle of protector to a young boy and his dying mother against the forces that pursue them, a hero may yet arise.."--Publisher website."@en
"A lone gunman reluctantly accompanies a young boy and his dying drug-dependant mother, protecting them against the forces in pursuit. Fighting their way across the wastelands of the world, they seek the father of the boy, who it is promised will offer protection. But dangerous creatures live in the shadows, and there are assassins at every turn."