Lost Man, Survivors, Force of Nature all by Jane Harper are some of my favourites. That type of thing is what I am after. With or without cops. The first 2 of those I liked the best, and there weren't cops involved really.
AI gave me some really awful stuff: The Only One Left, Riley Sager for instance.
I know it's a hard ask, Harper is pretty good and unique. I should mention I've read the other Aussie authors, Hammer, White, Disher.
by ClimateTraditional40