Star Trek Fic Finder

I actually remember quite a lot about the fic, just not the title, the author, or where it was posted!

The fic was Reaper!Bones, but didn't actually feature him as a POV character, which I really appreciated. Instead, it is seen through the eyes of Chekov, Spock, Kirk, and Sulu (and maybe a few others.) I believe that it was meant to be eventual Reaper!BonesxChekov and KirkxSpock was already coming along.

On a routine 'talk with the locals' type mission, Kirk, Chekov, Spock are captured by a rebel group that uses a native gas to render the visiting humans into a state of panic, invoking their worst fears (clowns, romulans, mutany are the ones I remember). Twenty of the captives are held in one warehouse, the other twenty are separated from them in another. Sulu and Uhura are running the ship/rescue mission. No one realizes that McCoy (who *ought* to be one of the captives) isn't present, and then he --in his paranoid Reaper!Bones psycho persona --kills all the hostiles outside one warehouse by ripping them limb from limb and bursts through the metal door in a homicidal rage like a growling, blood soaked, miniature Hulk.

Because that last scene was just about the best intro to Reaper!Bones I've ever seen, I really, REALLY want to find this thing again...but after several fruitless hours of trying on my own, I'm putting it out to you guys.
ME