The "girl" of the title was played by Hazel Dawn, a popular stage actress who briefly enjoyed a flourishing film career. Dawn plays Miss Shipley, an American girl vacationing in France. Our heroine finds herself the romantic bone of contention between two "men of the world" (William Roselle and Hal Clarendon), who end up fighting a duel over her affections.
| Actor | Role |
|---|---|
 Hazel DawnKate Shipley | Kate Shipley |
 Lionel AdamsCapt. John Gregory (unconfirmed) | Capt. John Gregory (unconfirmed) |
 Fania MarinoffJulie Fonblanque | Julie Fonblanque |
 Camille DalbergMme. Fonblanque | Mme. Fonblanque |
 David PowellM. Henri De St. Hillaire | M. Henri De St. Hillaire |
 George BackusDr. Girodet | Dr. Girodet |
 Clarence HandysideMr. Shipley (as Clarence Hanyside) | Mr. Shipley (as Clarence Hanyside) |
 Hal ClarendonComte Florian de Crebillon | Comte Florian de Crebillon |
 William RoselleCapt. John Gregory (unconfirmed) | Capt. John Gregory (unconfirmed) |
| CCharles KrausM. Fonblanque (as Charles Krauss) | M. Fonblanque (as Charles Krauss) |
 Rolinda BainbridgeSylvia de Crebillon | Sylvia de Crebillon |