Free ecclesiastical mystery on Amazon:
A Very Private Grave by Donna Fletcher Crow
Felicity Howard, a young American studying at the College of the Transfiguration in Yorkshire, is devastated when she finds her beloved Fr. Dominic bludgeoned to death and Fr. Antony, her church history lecturer, soaked in his blood ... A Very Private Grave is a contemporary novel with a thoroughly modern heroine who must learn some ancient truths in order to solve the mystery and save her own life, as she and Fr. Antony flee a murderer and follow clues that take them to out-of-the way sites across northern England and southern Scotland. The narrative deftly mixes detection, intellectual puzzles, spiritual aspiration, romance, and the solving of clues ancient and modern.
Also, according to the author page
the second in the series will be free May 2-3:
A Darkly Hidden Truth