Question: Who wrote the novel in which Gaspard Ullie was portrayed as a serial killer? 
Sentence (from "Gaspard Ulliel"): He is best known for portraying serial killer Hannibal Lecter in "Hannibal Rising" (2007) and fashion mogul Yves Saint Laurent in the biopic "Saint Laurent" (2014), and for being the face of the Chanel men's fragrance, Bleu de Chanel.
Relevant evidence: Yes