Old fashioned folk medicine, though this is not of the usual overdone Voodoo type but rather rural West Virginia. Very interesting.
Even Scully would have made the same call as the doctor, put the girl out of her pain and while Peatie ranted about how he could have saved her, the doctor pointed out – you weren't there! Peatie's abilities are certainly impressive but has given him something of a god complex, he cares nothing for killing the doctor's family for vengeance. The doctor didn't murder his daughter, it was an act of mercy.
Billy Drago, as always, plays psycho creepiness to perfection. James Morrison plays the doctor wonderfully, I've always been a fan of his.
A great episode.