This sounds like a Jack Reacher story.
I'm a sucker for the loner, play by the rules/honesty badass that is placed in a situation he doesn't even want to be but comes out the other side taking matters into his own hands.
I would love it if Dale was driving at duck/night and he sees the young kidnapped girl - was it really a young girl? - as she rushes across the street into the woods. Was she only wearing her underwear??
He doesn't really know wtf that was about and he looks to where she ran into the woods and then he crashes into the LEO who was running after her, his pants halfway down his legs.
Now Dale, a - pick your character traits (badass ex-military, ex-LEO, reporter, etc) is forced into figuring out wtf is going in this small town.
I actually scripted a whole movie in my head on the way to/from North Carolina three years ago that deals with a loner type of guy having to face off against a French psychopath/drug kingpin nicknamed "Le Boucher" in the slums off of Paris. He mistakenly falls for a female who Le Boucher was "saving for himself" and now he's entangled in this big mess. I need time to write it down.
Oh hell. Now I'm hoping he makes it like First Blood with a John Rambo like character and a corrupt police force. Maybe less on the "blow up the town" approach...then again, maybe not.
I'm a sucker for the same types of movies. But I'm more attracted to the stories where the lead is the "seemingly incapable hero," as in the recent Sweet Virginia. Another small town thriller but told from the perspective of a long time resident, dealing with an unknown person entering the town.
I'm doing some of the dirty work right now on my story, and by that I mean character details and actual plot. Right now it's just a concept. I really want Dale to have some sort of ties with the smuggling happening in Harper, but not sure what. Maybe his little sister disappeared some years back, never found, etc. But that would make him a little too close to what's going on, and talk about a coincidence since he just ran down someone involved with trafficking young girls. But then again, that is a pretty logical plot.
Or, Dale stumbled upon all this and breaks the news to the Sheriff. He found evidence of something strange in the cruiser he smashed into. If that's the case, I can keep my intro.
I've decided the local airport where these traffickers refuel will be owned/operated by the sheriff's SISTER, which should prove interesting as she's well aware of what she's doing. I'm thinking she'll be paid off from these people in exchange for her supposed ignorance to what's really going on.
The final real issue is the perspective of the story. Dale is an outsider with no knowledge of anything, and him investigating what he finds in the patrol car makes no sense...unless he's already brought this to the sheriff, and the sheriff dismisses it. From that point Dale would make it his business to find out what's going on. Ultimately he would break the news to the sheriff that his own sister is responsible for letting the traffickers in and out of Harper.
Like I said, still considering different ideas, but the overall concept is there.