1931's "Smart Money" is the only time Edward G. Robinson and James Cagney were paired in a film. Robinson is definitely in the lead here, though. Although it's impossible to really describe Cagney as "subdued" in anything he ever did, he is toned down a bit. Robinson plays Nick the barber, who gets 10K together to gamble in one of the syndicate's big games. This turns out the way you'd expect when a small time guy goes up against the mob and expects them to play on the level. Robinson's character vows revenge as a result of this double-cross. He eventually does become a successful big-time gambler with a gambling syndicate of his own. At this point he begins to attract the attention of law enforcement.
Don't expect Robinson's Little Caesar character to show up here - Nick the Barber is a kinder gentler gangster. In fact, he's really not much of a gangster at all. He pretty much limits his law-breaking to participating in and backing gambling until the final scene, which turns out to be the height of irony. Very much worth your viewing time.