Nydia, an Early Christian girl seemingly singled out for exclusive persecution by the despotic empress of Rome. The empress' ire seems to have been aroused by the fact that her erstwhile sweetheart, handsome centurion Caius (a very young Ernest Truex) is in love with Nydia.
| Actor | Role |
|---|---|
 Nell CraigNydia (as Nelle Craig) | Nydia (as Nelle Craig) |
 Clifford BruceCaius | Caius |
| RRiley HatchCaius' Father | Caius' Father |
| WWalter R. SeymourNydia's Father | Nydia's Father |
 Rosita MarstiniCaius' Bride (as Countess de Merstina) | Caius' Bride (as Countess de Merstina) |
| AA.H. BusbyCaius' Bride's Father | Caius' Bride's Father |
| CCharles E. BunnellA High Priest of Jupiter | A High Priest of Jupiter |