I love mystery novels...

...which is probably why this essay made me laugh like a loon:

If you’ve ever felt let down by the end of a mystery novel, there’s a good reason why. The biggest secret in crime fiction is that there are really only, like, four ways to tie up a mystery, and I’m going to show you all of them in 1,200 words. Get ready to have an entire genre irrevocably spoiled.

2A—The Tertiary Perpetrator—is my favorite, because I like to try to spot 'em when they get introduced.