Girls on the Loose (1958)

Vera (Mara Corday) runs a nightclub that's really a front for her secret operation: an all-female crime ring that's been pulling off heist after heist. The gang does a major job with the help of Agnes (Abby Dalton), a new recruit and insider with access to a bank's payroll. But then the nervous Agnes threatens to squeal, so Vera has her rubbed out. And when Vera's good-girl sister, Helen (Barbara Bostock), starts dating suspicious policeman Bill (Mark Richman), Vera gets really cutthroat.