| Henry Drexel, a young American business man. |
| Princess Olga Valenko. |
| General Valenko, her father, Military Governor of St. Petersburg. |
| John Howard, Drexel’s uncle, an American capitalist. |
| Mrs. Howard. |
| Alice Howard, their daughter, engaged to Prince Berloff. |
| Prince Berloff, a powerful Russian nobleman. |
| Countess Baronova, a fair young widow. |
| James Freeman, an American correspondent. |
| Captain Nadson, of the political police. |
| The White One, the hidden leader of the revolutionists. |
| Razoff, | } | of the revolutionists’ Central Committee |
| Sabatoff, |
| Pestel, |
| Ivan, | } | revolutionists. |
| Nicolai, |
| Colonel Delwig, governor of the fortress-prison Sts. Peter and Paul. |
| Colonel Kavelin, his successor. |
| Borodin, a prisoner of State. |