From the publisher’s website:
In the frontier of the American West, a veil of evil threatens to engulf humanity. Servants of the fallen angel Temozarela are paving the way for their dark lord’s resurrection. One man stands in the way of the Apocalypse — Ivan Isaacs — a fallen priest who sold his soul to the devil Belial for the power to fight evil. Armed with a wicked blade and silver bullets, Ivan will give the heretics a baptism of blood in his pilgrimage for humanity’s redemption.