When a young girl is placed under hypnotism, it's discovered that she has a split personality.
| Actor | Role |
|---|---|
 Blanche SweetDorothy/Becky | Dorothy/Becky |
 Theodore RobertsBalzamo | Balzamo |
 James NeillDr. Emerson | Dr. Emerson |
 Carlyle BlackwellDr. John Arnold | Dr. John Arnold |
 Jane WolfeCarrie, Balzamo's assistant | Carrie, Balzamo's assistant |
| GGertrude KellarMiss Emerson, Dr. Emerson's sister | Miss Emerson, Dr. Emerson's sister |