The new trailer has been released for A Complete Unknown. A Complete Unknown is an upcoming biopic starring Timothe Chalamet as the acclaimed musician Bob Dylan. The film chronicles Dylan’s life as he is an up-and-coming singer trying to make it in New York. Directed by James Mangold, A Complete Unknown features a supporting cast including Elle Fanning, Scoot McNairy, Edward Norton, Boyd Holbrook, Monica Barbaro, James Austin, and Cahrlie Tahan.