A Demon in the Darkness (Sagas of the Scarred Knight)

A once glorious empire has been laid low. A new dark age has descended, bringing with it chaos, strife and a reign of blood. Armies clash and cities burn as the light of human civilization grows dim. Ancient horrors slither from the shadows of forsaken places to plague mankind with madness and death.
In the midst of this darkness a veteran mercenary leads a ragtag army in a desperate battle for survival. While behind the walls of an ivory city a pretender dreams of power and conquest. This is their story, a tale of brutal warfare, dark conspiracies and evil beyond the comprehension of a sane mind.