Speaks the Nightbird by Robert R. McCammon
This is historical fiction and the first book in the Matthew Corbett series.
Published October 8th 2013 by Open Road Media (first published September 1st 2002).
Description from Goodreads:
Came the time when the two travellers knew night would catch them, and shelter must be found.
God and Satan are at war in the colonial Carolina town of Fount Royal, and even the citizens suspect that a witch is behind the tragedies that have plagued the town. The chief suspect is the beautiful and haunted widow Rachel. Traveling judge Isaac Woodward and his bright young clerk Matthew Corbett arrive to conduct a trial–and uncover the true evil at work in Fount Royal.
Kindle Edition, 816 pages
Published October 8th 2013 by Open Road Media (first published September 1st 2002)
original title: Speaks the Nightbird
Edition language: English
Series: Matthew Corbett #1
Check this book out.