For They That Could Not Be Saved

An AU take on what could have happened that Halloween night. Has the Severus/Sirius pairing although that isn't really the focus. What if Severus had never been a Death Eater and he and Sirius had gotten there first that terrible night? How would they deal with the deaths of their adoptive siblings? A Severus and Sirius raise Harry fic. My appologies for the crap summary