The Impostor(1961)

Two brothers, the first is a swindler who asks his brother, who looks like him, to replace him in his business after he is chased by his opponents, the two brothers, one of them is an evil man working in diamond smuggling, while the second is a respectable human being despite his extreme poverty, the evil brother succeeds in entering his brother to the mental hospital, but he decides to get him out of it in order to deceive some gangsters