Young girl gets a job at the White House as a switchboard operator and gets mixed up in politics.
| Actor | Role |
|---|---|
 Deanna DurbinMary Peppertree | Mary Peppertree |
 Edmond O'BrienLt. Tom Farrington | Lt. Tom Farrington |
 Don TaylorDavid Paxton | David Paxton |
 Ray CollinsHarvey Elwood | Harvey Elwood |
 Harry DavenportJustice Peabody | Justice Peabody |
 Katharine AlexanderMiss Harkness | Miss Harkness |
| LLouise BeaversBertha | Bertha |
 Jeffrey LynnPhillip Manning | Phillip Manning |
 Hugo HaasGustav Heindel | Gustav Heindel |
 Griff BarnettTimothy Peppertree | Timothy Peppertree |
| JJames ToddJustice Van Sloan | Justice Van Sloan |
 Morris AnkrumAdm. Walton | Adm. Walton |
 Frank ConroySamuel Litchfield | Samuel Litchfield |
 Leon BelascoIgor | Igor |
 Raymond GreenleafJustice Williams | Justice Williams |
 Charles MeredithJustice Hastings | Justice Hastings |
 Adrienne MardenHilda | Hilda |
 Beatrice RobertsDorothy | Dorothy |
 Harry CheshireCol. Hedley | Col. Hedley |
 Donald RandolphAsst. Attorney General | Asst. Attorney General |
 William GouldSen. Benning | Sen. Benning |
| MMary AdamsMarge | Marge |
| AAdele RowlandMrs. Peabody | Mrs. Peabody |