Russell Hemmell 
The Chancels of Mainz [EPUB ebook] 

In late 16th century Germany, the witch-hunt trials are engulfing the country.

Young, brilliant, and eager to prove himself, Inquisitor Hermann De Vylt is hellbent on his holy war against the forces of evil.

But when his world is turned upside down by the death of a noblewoman accused of witchcraft and the encounter with the mysterious Namtar in the Cathedral of Mainz, Hermann is forced to reconsider his allegiances.