Mank is a 2020 American black-and-white biographical drama film about screenwriter Herman J. Mankiewicz and his development of the screenplay for Citizen Kane (1941). It was directed by David Fincher based on a screenplay by his late father Jack Fincher and was produced by Ceán Chaffin, Douglas Urbanski, and Eric Roth. It stars Gary Oldman in the title role, alongside Amanda Seyfried, Lily Collins, Arliss Howard, Tom Pelphrey, Sam Troughton, Ferdinand Kingsley, Tuppence Middleton, Tom Burke, Joseph Cross, Jamie McShane, Toby Leonard Moore, Monika Gossman, and Charles Dance.