James Duff made his mark in Star Trek as the screenwriter of "The End Is the Beginning," an episode that delves into complex ethical dilemmas faced by Captain Gabriel Lorca and the crew of the USS Discovery. Known primarily as a writer and producer, Duff brings a thoughtful narrative style that highlights character-driven conflict within the sci-fi setting. His work on Discovery complements the show’s darker, more nuanced exploration of Starfleet, standing out among episodes that challenge the ideals of hope and unity typically associated with the franchise. While Duff is better known outside Star Trek for creating the crime drama series "The Closer," his contributions to Discovery resonate with Trekkies who appreciate the series’ layered approach to storytelling and moral ambiguity. Through his writing, Duff helped expand the Star Trek catalog with moments that prompt viewers to reconsider what it means to lead in uncertain times aboard the starship.