Picking a few random self-published books from the Ned Kelly submissions in 2017 leds me to the third Inspector West book from SA author, Peter Mulraney.
From the Blurb:
Murder. Arson. Revenge.
Detective Inspector West investigates the grisly deaths of two elderly priests: one in a suspicious fire; the other obviously murdered.
The inspector is not the only one hunting the priest killer.
If you like murder mixed with mystery and conflict, you’ll probably love the suspense and intrigue in Peter Mulraney’s Holy Death, the third book in his Inspector West series.