From the jacket copy:
Hell is truth seen too late.
Before he became a U.S. federal marshal in Haxan, John Marwood rode with a band of killers up and down the Texas/Mexico border.
Led by Abram Botis, an apostate from the Old Country, this gang of thirteen killers search for the fabled golden city of Cibola, even riding unto the barren, blood-soaked plains of Comancheria.
And in this violent crucible of blood, dust, and wind, Marwood discovers a nightmarish truth about himself, and conquers the silent, wintry thing coiled inside him.
COMING JUNE/JULY 2015 from CZP. Blood, dust, wind!