Your enjoyment of this is really going to depend on your interest in the subject of Robert Caro (and to a lesser extent, his editor). As someone who’s a fan of Caro (but will probably never actually get around to reading any of his work), this was catnip.
But if it’s easier to sell you on it, what this documentary is really about more so than any of the individual books they wrote together per se, is a friendship over…