Anyone preparing to work with David Fincher knows the legendarily fastidious director doesn’t do anything by halves, and those who signed up for his 10-time Oscar-nominated Hollywood homage Mank were not disappointed by his attention to detail. Filmed in luminous black and white and starring Gary Oldman, the film charts the genesis of the 1941 classic Citizen Kane from the perspective of its screenwriter, Herman J Mankiewicz.