Ty Corey Franck is an American novelist, screenwriter, and television producer. He is best known for co-authoring The Expanse with Daniel Abraham under the pseudonym James S. A. Corey, as well as Game of Thrones: A Telltale Games Series (2014) and The Expanse: Expanded (2016). The Expanse novels have been adapted into the television series The Expanse (2015–2022), with both Franck and Abraham serving as writers and producers on the show.