Nephilim's Rise. The Templar Chronicles, #8

From out of the darkness comes a light... For five long years the Adversary and his infernal allies have ruled the earth, herding mankind into demon-controlled enclaves and hunting those that remain near to extinction. The Templars, a mere shadow of their once-powerful organization have continued to fight against overwhelming odds, but for many hope and a belief in a human victory are things of the past.
Then, from the depths of the Beyond, a pair of legends emerge. The return of Cade Williams and his beloved wife, Gabrielle, a mighty warrior in her own right, galvanize the Templars. The Heretic's presence lights a fire in their souls and a flame in their hearts. Now, they prepare for their greatest challenge yet. It is time to reclaim what was thought lost.