Chloe Sevigny won me over by the time last week’s premiere episode was through. Now there are five more installments in this miniseries (which may or may not continue into a second season) in which Sevigny, as a transgender assassin, tackles one of the most unusual and unprecedented TV roles of the season. And the scene that won me over? The scene where she taught her young son, whom she’s only recently learned existed, to box. This series import is much more into character than caricature, and much less exploitive than it might sound.