Biskind's book, accordingly, concludes with a litany of spectacular  Coppola's Apocalypse Now and One From the Heart, Spielberg's 1941 , William Friedkin's Sorcerer, and, of course, Michael Cimino's Heaven's Gate . According to Mardik Martin, Scorsese's erstwhile writing partner (as quoted by Biskind): The auteur theory killed all these people.
Biskind stated that Mardik Martin had been William Friedkin's former writing partner.
Try as he would, Mardik Martin was never able to meet William Friedkin, in person.