Robert Black made some interesting pornography. Truly he was aenemically derivative of Gregor Dark but his vile productions had their fine qualities. I particularly loved (and still do) that shot from inside a car of Tricia Devereaux's beauriful face being violently smeared against the vehicle's window on tge outside because there was semen on it. The title I am referring to is 'A Couple of Weeks in the Life of a Prostitute'.