Gather, Darkness! by Fritz Leiber

Hardcover. Condition: Very Good, Dust Jacket: Good/Good-. 1950. Pellegrini & Cudahy. 1st Edition.

In a postapocalyptic future, the Hierarchy of the Great God controls technology and, with it, the commoners. Brother Armon Jarles, a young priest, becomes enraged and speaks out against the church. When he is claimed by the forces of evil, the Hierarchy finds itself in a fight with witches--and with technology that could match its own.