You may not know Mark Felt by name. But you may know the handle he was given by the media: Deep Throat. And yes, this is yet another retelling of the Watergate scandal that eventually brought down Richard Nixon in the 70's. So how's it different from the 70's classic All the President's Men? Well, it's not all that different. But it is from Felt's (played by Liam Neeson) perspective, rather than from journalists Woodward and Bernstein.
Who is this movie for? Personally I feel like I knew the story and didn't need to see this. But the ensemble cast is good and it's well made. So if you're interested in the Watergate scandal go see it.