Equestria is growing, and magical savant Twilight Sparkle is disgusted by the crime and corruption this change has brought. Her life is changed forever when she discovers the Death Note, a notebook with inexplicable and deadly powers. She uses this book to pass judgement on those she deems unworthy of life, aiming to create a perfect world free of crime. But when the two Princesses put their best pony on the case, a mysterious detective known only as L, a psychological game of cat and mouse erupts between the two.
Comments contain spoilers. Artwork by blu-red, opening by Anon3mous. Now with its own TV Tropes page.

This is TF Foundries, proud producer of things great and small. We offer cutting edge tools and materials for your everyday needs, such as pans, bats, chainsaws, shotguns, rifles, explosives, high explosives, chaotic-explosives, and our best known product, hired guns.

Thank you for visiting TF Foundries. Today, we are happy to present to you some of the most powerful persons Equestria has to offer. Let us Meet the Team.

And once again: Welcome. Welcome to TF Foundries.

Notes:
1) TF Foundries should be enough to let you figure out what crossover it is.
2) This was supposed to be a Meet the Team parody, until I accidentally gave it a disjointed plot. Expect the interviews to start getting stranger and stranger.
3) Cookie to whoever gets where I ripped the last line of the Description from.
4) Thanks for Aziraphael, _Medicshy, Skeeter_The_Lurker and Appletank for looking this over
5) Ponies are Hasbro's and Faust's, and other disclaimer thingies. Team Fortress 2 is Valve's and other disclaimer thingies.
6) Sorry for the image quality. Going to the source will make it look much better.
7) This is a Team Fortress Crossover

There are certain things that need to be done without the general public knowing, things that keep the peace in Equestria without a single word being said about it. This is where the CSF comes in. They are a group of the surviving alicorns banded together under Celestia to maintain order and peace through Equestria... Without anyone ever knowing who or what saved them. They are the ones who are called in to do what the Royal Guards can't. The ones who are called when all hope has been lost... They are, the Celestian Special Forces.