sam/dean serial killer au??
This one!!!!
There are so many serial killer AUs for Sam/Dean out there (Howlverse is probably my favorite of all time, palux is one of my favorite writers, aspirational, I love them, sorry this turned into a recommendation), lots of them where Dean is a serial killer (gaialux wrote one of my favorite takes on this, actually), some with both of them are serial killers...but this idea is born out of like, consuming Dexter in high amounts and wanting to add Dexter into my SPN. Smush together the two canons, make Sam the serial killer while Dean is "normal" in this fic (usually, Dean is the serial killer in serial killer AUs, if they're not both serial killers).
SO the premise is that Sam is "Dexter" in the sense that has violent urges to hurt people, and John realizes this and decides to channel that into being THE best hunter he can be (and also blames Azazel for Sam being wired so badly, and probably has bouts of thinking maybe he should kill him before he becomes too evil) . It starts in Dean pov (who is the Deb, in this scenario, if someone has to be the Deb) during season one and follows the vague outline of season one--picking Sam up, Jess's death, getting to know each other again--but things are wrong and slightly off, and Dean eventually figuring out that something is wrong with his brother. There's a lot of parallels between canons, and making John into Harry was really easy, tbh.
It's fun, doing a s1 rewrite, then diverging wildly at certain points. I'm trying to make them noticeably themselves, rather than making Dexter/Deb with different names.
Excerpt (under a cut):
(Sam is 9, Dean is 13)












