I love a procedural. A kind of sub-genre that takes us rigorously step by step through a process - usually of solving a crime or uncovering an unknown - think All The President’s Men. They take us on a journey, through mountains of details, twists and turns and resolve in success or failure.
I'll have to revisit Zero Dark Thirty. I found it a bit slow and tedious on initial viewing several years ago. Zodiac is one of my absolute favorites. But I'm a bit of a sucker for movies involving journalists trying to get the story (like Spotlight).
Jessica Chastain! Molly's Game and Miss Sloane are pretty great almost procedurals. Ms Chastain makes an excellent guide through both inner sanctums and undiscovered territory.