Hail, Caesar is the latest “typically sly, off-center comedy” (NYT) from the Coen brothers. It follows a single day in the life of a studio fixer (Josh Brolin), whose job is to keep the scandalous behavior of its stars out of the press. Things get out of hand when the star of a major production (George Clooney), goes missing, kidnapped by blacklisted writers. Subplots include a pregnant startlet (Scarlett Johanson), a singing cowboy with stagefright (Alden Ehrenreich) and a spoof of period musicals (Channing Tatum). Tilda Swinton plays dual role as rival gossip columnists. As goes with the Coen’s these days, the line between farce and frivolity is a thin one.