This is the tale of James Comey in a real darned if you do, darned if you don't situation. All the cliches work here "Walking the line", "Crisis of conscious", etc. Comey's side of the tale is that he was trained not to have any of these things - just do the work, present the work, move forward from there. Don't let politics or personal relationships be involved. It's the FBI that is trained not to be that way.
But in the 2016 American election campaign and things connected to it, were ALL political and personal. This is the story of a guy of the head of the FBI who really didn't want any of that,. It shows how he remained "robotic", with a very military attitude, stoic approach in his work, while he was surrounded by others that were not, including those in his own home.
The production of the telling of this side of Comey's tale was top notch. And as we all write reviews, that is what this is, Comey's side of the tale. And that is how I will present this review. Excellent casting with Jeff Daniels and Brendon Gleason - and even down to other important casting such as Scoot McNairy as Rod Rosenstein narrating the tale, Holly Hunter as Sally Yates, Jonathan banks (wow!), William Sadler as Michael Flynn (another WOW!), Michael Hyatt, Joe Lo Truglio and Kingsley Ben-Adir - the whole cast of actors were knock outs in their roles. All of them, they are all worth a look up on IMdB.
While many want to harp on the "political" side of this, The Comey Rule is not primarily about that as I mentioned above. For me, it was clear this wasn't about Party sides, but about a man so professional in his job, he wanted to do the right thing no matter who it was about. Comey shows even trying to walk the line, that there was no line for many - the Candidates, the media, the White House, his own team members in in the FBI, etc. And for a man who was as direct to do such, this production was good enough to walk that line as well.