Several years before anyone thought of the film Trade Winds, director Tay Garnett did a round the world tour and took a camera crew with him. They shot miles of beautiful travelogue type footage and Garnett had it in his mind to use it. According to the Citadel Film Series book The Films of Fredric March, Garnett sold the idea to independent producer Walter Wanger. Who thereupon commissioned a story to be written around these films and naturally it would be starring his wife Joan Bennett. All that background you see in Trade Winds is what Garnett shot years earlier.
Trade Winds is a strange film it can't quite make up its mind to be a mystery, comedy, or drama it truly defies classification. One thing we do know is that right away we're given information regarding the forensics that Joan Bennett is innocent. If she had not run, but stayed behind she'd have known right away and we'd have had no film.
But run she does and private detective Fredric March is put on her trail. He sure needs the money as well as he and secretary Ann Sothern owe a lot of bills.
The weakness of the plot is made up for a lot by the supporting performances of both Ann Sothern and Ralph Bellamy. Sothern is not in the tradition of private eye secretaries like Effie in The Maltese Falcon. She turns out to be just as good a gumshoe as March and she's a person of shifting loyalties.
Which is unlike Ralph Bellamy who might easily qualify for being the dumbest cop the movies ever portrayed. I could have seen him being commandant of the Police Academy forty years later. He's so earnest in such a Dudley Doo-Right manner he's positively hilarious. Sothern and Bellamy really do carry this film.
March is a charming rascal and Bennett a beautiful and vulnerable victim, but if you watch Trade Winds I know you'll enjoy Sothern and Bellamy most of all.