Leave it to Fox. In the middle of “American Juniors” last night (watch the twelve-year-old boys and girls sing songs from 1980), a promo for their fall series “Skin,” the show where the son of a D.A. and the daughter of a porn king find romance. The promo didn’t show much “Skin,” but it did outline the plot.

BTW, Frank Rich finds it a delicious show, with the “prospect that Ron Silver’s porn mogul may turn out to be more principled than Kevin Anderson’s self-righteous lawman.”