The one with the brains in Smart Girls Don't Talk is Virginia Mayo, a good-bad girl a little down on her luck who's open to some fudging when it comes to a buck. So when she's gambling in Bruce Bennett's Club Bermuda the night it's knocked over, she claims her paste ear-bobs were real diamonds. Bennett, eager to cover his clients' losses so the police don't come snooping around, sees through her ruse but falls for her anyway. (He drives her off to a ritzy roadhouse where they feast on châteaubriand - and after-dinner martinis.)
When her kid brother (Robert Hutton), just appointed to the surgical staff of a New York hospital, hits town, he meets the club's canary (Helen Westcott, who treats us to `The Stars Will Remember' - twice). But he disapproves of the company Mayo keeps. Deep down, so does she, and breaks off her affair with the casino boss. In a foul temper, Bennett kills a welsher in trying to recoup a bad debt, but takes a bullet himself. He staggers back to his club where Hutton is romancing Westcott; the surgeon is press-ganged into patching Bennett up. Rebuffing a payoff, Hutton raises fears that he, too, will turn canary, and one of Bennett's trigger-happy goons shoots him down. At first, Mayo refuses to believe that Bennett could be involved in the murder. Police detective Richard Rober (`I'm a policeman - I'm paid to have suspicions') tries to change her mind, and the wheels begin to turn....
Smart Girls Don't Talk is a brisk, big-town story with serviceable work from Mayo, Bennett, Rober and Tom D'Andrea (as Bennett's 2iC). Its director, Richard Bare, would work with Mayo again the next year in Flaxy Martin, where she played a duplicitous blonde (of course, she always played a blonde). She fares better here. Mayo lacked the tense skills necessary to project a believable femme fatale, but was quite appealing as a basically decent woman who's been around the block. That's what made her so smart.