An exceptional character analysis, well-told. Pitiless in the best of senses. You have fleshed out an entire DE world and the entire life of a man who is no more than a name in canon. It's this sort of insight, care, and nuance that I come to Beholder for. As others have noted, you do a fine job of mirroring other canon threads with Dolohov's, and showing, as magnetic_pole so perceptively says, how easily the "heroic" lessons of the books could have been otherwise.