Love On The Run (1936)
W.S. Van Dyke, who's famous for doing great madcap romantic screwball comedies, like the Thin Man series, did an okay job with this one too. Crawford and Tone were recently married in real life and Gable has been friends (and more) with Crawford for many years.
Two competing reporters, Michael Anthony (Clark Gable) and Barnabas Pells (Franchot Tone) chase down the story of a runaway heiress Sally Parker (Joan Crawford) who recently married and then jilted a European Prince Igor (Ivan Lebedeff).
Naturally, you know that Sally is going to fall in love with Michael despite her hating reporters. Barnabas is slowly catching up. Later they meet the Baron and Baroness Spandemann (Reginad Owen and Mona Barrie) who, as it turns out, are international (Nazi?) spies. Then the story veers off into a totally different direction.