Borenstein wrote, edited, and directed the 2003 film Swordswallowers and Thin Men while a senior at Yale University.
On February 14, 2018, it was reported that he would produce his screenplay into film alongside Michael Sugar, Marc Butan, Sean Sorensen, and Bard Dorros, with director David Frankel helming the project.
[11] On January 30, 2013, Borenstein was hired to write Paladin for Walt Disney Pictures,[12] and Mona for New Regency.
In addition to Borenstein, Carly Wray, Jane Goldman, and Brian Helgeland are also working on potential pilots.
[15] Current Game of Thrones showrunners D. B. Weiss and David Benioff would also be executive producers for whichever project is picked up by HBO.