This essay examines the ways in which cinema can influence our knowledge of an 18th-century literary text by focusing on the notion of generic hybridity: if the phenomenon of narrative hybridity allows us to think of representation levels, it is interesting to notice that current research on cinema can also make us reflect on what’s at stake in 18th-century French literature on that matter. In another words, this essay will question whether it is possible to rethink the question of generic hybridity by using an interdisciplinary approach between literature and cinema. To answer these questions, Jacques le fataliste by Diderot and The Purple Rose of Cairo by Woody Allen will be analyzed in parallel. What is interesting is that in both cases the reading protocol transgresses the border which usually separates fiction and reality. Through a primary focus on this generic transgression, this paper will question the status of fiction both in literature and in cinema.