“Mank” (**1/2 out of four) was an intermittently interesting biographical drama about screenwriter Herman J. Mankiewicz (Gary Oldman) and his development of “Citizen Kane” which many still cite as the greatest film of all time; film chronicles his dealings with various Hollywood insiders and actors (Amanda Seyfried, Charles Dance, Joseph Cross, and others) while film was in development. Director David Fincher beautifully recreates the aura and mood of golden-era Hollywood with striking and searing black-and-white cinematography from Erik Messerschmidt and various stylistic flourishes but the central story isn’t all that involving. Oldman is dynamic as always as Mank but we don’t know hardly anything about him except that he likes to drink and wants to have a hit. Hardcore Fincher fans and fans of “Citizen Kane” may find film as fascinating as intended.