Jaeden Martell. Actor: St. Vincent. Jaeden Martell is an American actor known for his compelling performances in both film and television. He first gained recognition for his role as Bill Denbrough in the 2017 film adaptation of Stephen King's novel It (2017) and reprised this character in the 2019 sequel It Chapter Two (2019) . His other notable work includes a role in the mystery film Knives Out (2019) (2019)...