Sweet Revenge

After a childhood of abandonment, kidnapping, and witch-killing, Sam and Dean Winchester became hunters. It's a rough life, but it's theirs and they're used to it. At least, they were. Until the brothers get called to Lawrence, Kansas just in time for the blood moon, which brings with it potential insight into their past. (SPN fusion with Hansel and Gretel: Witch Hunters, Destiel)