The Guardian (the Soul Summoner)

"The mission was supposed to be simple: Get in. Save the girl. Get the hell out. But Warren Parish knows nothing is simple with demons involved, and storming the gates of Hell will be no exception. An innocent woman is trapped in Nulterra, but this journey is so much more than a rescue mission. Along with his new enchanted sword capable of killing angels, it seems the demons have forged another powerful object ... A magical stone that can grant him what he wants most in all three realms--a life on Earth with his daughter."--Back cover