So my brother's been watching a lot of Criminal Minds lately, and I  got to thinking. There are a ton of crossovers with CM out there, but as far as I can tell most of them are set relatively late in SPN canon--earliest I can think of off the top of my head is one in Season 4. If anyone could rec something a little earlier that would be great.

One thing that bothers me, though, is St. Louis. A shapeshifter taking the form of women's significant others while they're out of town and torturing them to death? Take out the shapeshifter angle and that case would be right out of CM, so why hasn't anyone put them there?

Basically, I would love it if someone could point out a crossover with CM set in the SPN episode 'Skin' or any other fic set in the early seasons of Supernatural.