Brian Duffield is an American film director, screenwriter, and producer. He was born 5th November 1985. He directed the 2020 dark comedy Spontaneous and films he has written include Love and Monsters (2020), Underwater (2020), and The Babysitter (2017). Duffield is noted as having multiple spec scripts being named to The Black List, an industry listing of well-regarded screenplays, including Jane Got a Gun (2015) and Your Bridesmaid is a Bitch.