Based on a novel by Vina Delmar, Bad Girl stars Sally Eilers as heroine Dot Haley. The title notwithstanding, Dot isn't bad at all. She enters into a decent marriage with a decent guy, radio store clerk Eddie (James Dunn), and sticks with her man through thick and thin (mostly thin). But Eddie misunderstands Dot's seeming indifference to the new apartment which he has rented and furnished as a first-anniversary surprise. Eddie doesn't know what Dot and the audience do: there's a baby on the way, and that's all that Dot can think about. Once this misunderstanding is cleared up, Eddie takes on all sorts of extra jobs to pay for a pricey obstetrician, even moonlighting as a prizefighter. So impressed is the baby doctor by Eddie's devotion that he refuses to charge a cent when delivering Dot's baby (the bill, by the way, is a daunting $40). Curiously, some synopses of Bad Girl suggest that the hero and heroine never get married, which is hardly the case.
~ Hal Erickson, All Movie Guide