*Season 3 Spoilers* Prompted by part of Sherlock's speech in The Sign of Three. "As a mental exercise, I've often planned the murder of friends and colleagues. Now, John I'd poison. Sloppy eater. Dead easy. I've given him chemicals and compounds that way. He missed a whole Wednesday once, didn't have a clue." John may not remember that Wednesday, but Sherlock does. Johnlock

I've written a few and don't quite believe they're long enough to fit into their own story. So here's a couple of them in one. I don't know how many I'll add. I'm going to include whatever characters I feel like, but keep in mind Dean and Cas may make up the majority of these.