ok for the au thing !! i got Western AU and Dark AU !!

Thank you for the ask! I got distracted talking to my partner!

Anyway a bunch of this is yoinked from a book series I never finished due to it being a bit too politically conservative for my tastes (specifically the book Nowhere to Run) and I also spent far too much time browsing Wikipedia for locations. Not sure if this is what is meant by "dark AU" but it's late at night so

TW for some mild gore and death

Carbon County (MT; there's also one in Wyoming) game warden Jack Kelly was reassigned to temporarily work in Granite County, MT and he's finally almost due to go back to his normal post in Red Lodge. He'd left it in good hands--the Stillwater County game warden (Finch) and county sheriff (Charlie) have most of his duties covered and give him near-daily updates. But he'd rather be back in Red Lodge, where he knows most of the people and their habits and can use his friendship with Katherine, the editor-in-chief of the local newspaper, as an excuse to stop by the office and flirt with one of the staff writers.

However! The week before he's supposed to leave, he starts getting reports of disappearances and campsites being attacked and mysteriously murdered wildlife in Lolo National Forest, so he very reluctantly goes in to investigate. He has a penchant for getting caught up in far more murder mysteries than any self-respecting game warden should, so he's resigned himself to dealing with this nonsense yet again. On the other hand, despite the looming threat of who (or what) ever's behind all this, it is kind of nice to be out camping in the woods.

Jack had made plans with Sean Conlon, the game warden from the neighboring county, to separately make their way through the national forest (both on horseback) and meet somewhere in the middle, with the goal of covering more ground and hopefully finding more information about whatever's going on. But he's struggling to get a hold of Sean, so he resigns himself to investigating alone--he hasn't run into anyone so far--even though part of him knows he should turn back.

The day he decides to turn around, he finally finds Sean, accompanied by a backpacker with a mischievous smile who won't give his real name.

"I've been looking for you everywhere," Sean says. "We have murders to prevent."

"I've been helping," the backpacker says. "We have murders to prevent."

Jack is skeptical of the backpacker, but he's annoyingly charming and Sean seems to trust him, so what else is he supposed to do? They start investigating together, and the backpacker, who still won't give them a name beyond "Racer" and won't say where he's from beyond the UP ("What's that? The Union Pacific?" it's the Upper Peninsula of Michigan but Jack and Sean haven't paid enough attention to Michigan to realize that), brings them to a campsite, where they find a whole bunch of dead elk and also the bodies of a couple of the people who have gone missing. There aren't a ton of clues, but it's the first new information they've gotten the whole time, so they're feeling a little better about the whole thing. Being game wardens, they're used to seeing dead animals, but the decomposing human bodies are a little (a lot) unsettling.

The problem is, when they try to signal the local authorities with the location of the campsite, their radios keep running into technical difficulties. Racer seems unbothered by the whole thing, weirdly, but they decide to note the coordinates as best they can, keep going, and see if they can find anything else.

The thing is, Jack and Sean have been feeling the effects of all this time outside--they're getting sunburnt, they have scrapes everywhere, and they're definitely going to need a shower when they get back. After they find the campsite, they start to notice that Racer is as pale and clean and un-scratched as he was when they first met. And now that they think of it, they haven't seen him eat or drink anything the whole time he's been traveling with them...

And now they're in the middle of nowhere together, with malfunctioning communication gear, and it's been a week since they entered the national forest, and they haven't encountered any other living humans during that time.