That's right, we are in MASSACHUSETTS!
This is book number 6 in the Clare Fergusson / Russ Van Alstyne Mysteries series.
In the searing conclusion to All Mortal Flesh, Russ's balance between duty and desire was broken by his wife's tragic death. Now, Russ and Episcopal priest Clare Fergusson are separated by a wall of guilt and grief. When a Mexican farmhand stumbles over a Latino man killed with a single shot to the back of his head, Clare is drawn into the investigation. The discovery of two more bodies ignites fears that a serial killer is loose in the rural town while Russ is plagued by the media hysteria, conflict within the police department, and a series of baffling assaults. Throughout the escalating tensions, he and Clare find themselves seeking each other out even as they intend to keep distant.