Check and Double Check

Check and Double Check is a 1930 comedy film made and released by RKO Radio Pictures based on the toprated Amos n Andy radio show. The title was derived from a catchphrase associated with the show. Directed by Melville W. Brown, from a screenplay by Bert Kalmar, J. Walter Ruben, and Harry Ruby, it starred Charles Correll and Freeman Gosden in the roles of Andy and Amos, respectively, which they had created for the radio show. The film also featured Duke Ellington and his Cotton Club Band.

That night, prior to attending a meeting at their lodge, the Mystic Knights of the Sea, they are hired to transport Duke Ellington and His Cotton Club band to a party being given at the Blair estate. While they are on their way, Richard is confiding to John Blair his feelings for his daughter, and also stating that he has no intention of pursuing Jean unless he can afford to start his own business to support them. After the death of his father, Richards family lost all their money. He has come up to New York because his grandfather used to own a large home in Harlem, and he hopes to be able to find the deed to it, in order to sell it for the money needed to start his business. He thinks the deed must be hidden somewhere on the property itself. Unknown to Blair or Richard, is that Ralph is eavesdropping on their conversation.After his discussion with Blair, Richard runs into Amos and Andy, who used to work for his father down south, and they are all happy to see one another. Having delivered their fare, the two cab drivers rush back to town to attend their lodge meeting. The lodge has an annual tradition where a pair of members must spend a night in a haunted house in Harlem, and find a document labeled, Check and Double Check. Once they find it, they are to replace it, in a different location, with their own version, for the lodge members to find the following year. The haunted house in question in none other than the house previously owned by Richards grandfather. ........

Source: Wikipedia