Frank Charles Spotnitz (born November 11, 1960) is an American television writer and executive producer, best known for his work on The X-Files and The Man in the High Castle. Spotnitz is also the chief executive officer and founder of Big Light Productions, a London and Paris-based production company, which specializes in international television series, including drama, comedy and documentaries. Spotnitz's career includes creating, writing and producing series with networks, cable, streaming and other broadcast platforms around the world.