Sins of the Cities presents the first history of a male prostitute as told from his own viewpoint—and without apology. Its main character is Jack Saul, whose life is written up from “his rough notes” commissioned by a certain “Mr Cambon.” The two men first meet in November 1880, when Cambon cruises Saul in Leicester Square, being attracted by the “extraordinary” size of the “lump in his trousers.” He is equally struck by Saul’s expertise at oral sex and asks for an account of how he arrived at such proficiency. Saul agrees to provide a narration of his life, with the understanding that he will be paid for his efforts. Saul is thus frequently cited as the “author” of the resulting book. If so, he must share the title with Cambon. The latter’s introduction takes up seven-and-a-half pages in the Valancourt edition. His voice returns for eight pages at the end of the book in three essays apparently designed as filler to reach the requisite length.