Basil Rathbone (Paul Reynard), Victor McLaglen (Dirk), Sigrid Gurie (Irene Reynard), Robert Cummings (Bill Gregory), Leo Carrillo (Roberto), Irving Bacon (Mushy), Maurice Moscovitz (old convict), Henry Armetta (head waiter), Billy Gilbert (Manuello), Samuel S. Hinds (Lamartine), Irving Pichel (Rocco), Ferike Boros (Maria).Director: JOHN BRAHM. Screenplay: Aben Kandel, Stephen Morehouse Avery, Frank Partos, Edwin Justus Mayer. Original screen story: Jean Negulesco. Photography: Hal Mohr. Film editor: Phil Cahn. Music director: Charles Previn. Songs (both Gurie): "Love Opened My Eyes" and "Heart of Mine" by Jimmy McHugh, Frank Skinner, Ralph Freed. Copyright 28 September 1939 by Universal Pictures Co., Inc. New York opening at the Globe: 26 October 1939. U.S. release: 29 September 1939. Australian release: 25 April 1940. 7,005 feet. 77 minutes.SYNOPSIS: Escaping from a French penal colony, an arch swindler tries to makes life miserable for his innocent young wife. COMMENT: A bizarre and utterly off-beat film, with some superlative performances (including Irving Bacon giving such a fine portrayal that one regrets the bulk of his career was spent playing innocuous soda-jerks) and highly imaginative direction by John Brahm.Despite his billing, Victor McLaglen has a smaller role than either Billy Gilbert or Leo Carrillo who both provide some wholly unnecessary comic relief.OTHER VIEWS: John Brahm's impact on the Class "B" picture is producing one of the strangest sound effects in recent cinema history. It is that of an unmistakable "B" buzzing like and "A". If his "Rio", like his "Let Us Live" of last season, is not a complete triumph of directorial mind over routine plot matter, it represents its victory in a few skirmishes at least. Better still, it represents an effort of a new director to break away from the established pattern and try something new. — The New York Times.

A Parisian swindler (Basil Rathbone) sentenced to Devil's Island eventually escapes to find his wife (Goldwyn Edsel Sigrid Gurie) has fallen in love with another man (Robert Cummings)...The year 1939 is considered a high water mark in Golden Age Hollywood's studio era but RIO is a movie I doubt we'll hear much about in the future (godknows, I never did in the past). It's an odd-ball Universal "A" with a "name" cast (Basil Rathbone, Victor McLaglen, Robert Cummings, Leo Carillo, Billy Gilbert, and, at the time, Sigrid Gurie) and probably a "programmer" (a movie shown as the bottom half of a double-bill in big theaters and by itself in smaller venues) that came and went rather quickly. The IMDb labels it "film noir" but it's not -not that I could see, anyway. If anything, it's quite possibly a "proto-noir" but that's only because of the director, German émigré John Brahm (THE LODGER, HANGOVER SQUARE, THE LOCKET) and the fact the protagonist is an "anti-hero", something unusual for movies in 1939. Rathbone's the star -it's his adventures we're following- and being France's answer to Bernie Madoff and a cold-blooded murderer made him no less likable. Basil was right at home as a French fancy pants but making with the beefcake was pushing it a bit, especially when stripped to the waist on a chain gang or making a daring escape through the swamps. The setting was quite ambitious (Paris, Devil's Island, various nightclubs, the South American jungle, Rio during Carnivale) and nicely realized, considering, but those four songs were there, no doubt, to pad it out -or promote Sigrid Gurie, who warbled three of them (which was two too many if you ask me). Siggie was launched the year before by Samuel Goldwyn as "The Norwegian Garbo" when he starred her in THE ADVENTURES OF MARCO POLO and if her talents had been more than modest, it probably wouldn't have mattered when the press later found out she was born in Brooklyn -but it did and she faded fairly quickly. I'd give it a "recommended if it's not going out of your way" -provided it ever pops up anywhere.

John Brahm's Rio is often cited as an early (1939) precursor of what would become, a few years later, film noir. But it doesn't have a great deal going for it, though Brahm later did creditable work in the cycle (The Brasher Doubloon, Hangover Square, The Locket). Basil Rathbone, best known of course as Sherlock Holmes, puts aside his deerstalker's cap and meerschaum pipe to portray a swindling international financier who, along with his songstress wife (Sigrid Gurie, whoever she was), seem to be the toast of le tout Paris. Alas, he's arrested and sent to rot in one of those French-colonial penal colonies off the coast of South America (which probably never existed but is conveniently close to Rio de Janeiro). His wife sticks by him for some reason and journeys to Brazil, though she's sorely tempted by Robert Cummings as an engineer fallen into hard times and the bottle. Rathbone, meanwhile, murderously escapes to Rio.... The plotline lacks tension and, save for Rathbone's Sten-gun elocution, there's not much acting to savor either -- though Gurie sings a few songs in decadent nightclub settings. Some viewers might be happy to hear them.