Ethan Hawke plays a used bookstore owner who moonlights as a muckraking reporter in The Lowdown. The Lowdown, as it’s titled, uses its murder plot to create a world crackling with humor and sadness and, well, danger. He explains why early success isn’t always a blessing, and describes the anxiety he’s faced later in life. Watching The Lowdown, I kept thinking of Fargo — with its desolate open spaces, oddball humor, and crazy-quilt of tones. The Lowdown isn’t merely a good show.