| Miss |
Avery | Governess of Lucy and Eliza |
| Jane |
Avril | Entertainer |
| Viking |
Boone | Ran the operation of Grey Swan |
| Mr. |
Crane | Owner of the mansion |
| Elias |
Cromer | Man in railway viaduct |
| John |
Crouch | One of the brothers called for work |
| Abel |
Crouch | One of the brothers called for work |
| Rosie |
Ennis | Presides over Grey Swan |
| Mrs. |
Fraser | Visitor to Mr. Crowe's, Madame |
| Mr. |
Gill | Client of Mrs. Fraser, alderman's son |
| Mrs. |
Haim | Eustace's landlady |
| David |
Landor | Murdered man in the car at the mansion |
| John |
Rowley | Instrument maker |
| Alderman Charles |
Swain | Uncle of two girls in the boat |
| Eustace |
| Butler in the mansion |
| Arabella |
| Opera singer in the car |
| Clara |
| , a Young girl lives in a mansion |
| Alice |
| Housekeeper/Cook in the mansion |
| Chastern |
| Powerful old man, in the limo |
| Earl of Orrery |
| Commissioned Orrery instrument |
| Nazaire |
| Chastern's attendant |
| Eleanor |
| Sister of the ship owner's son, died |
| Lucy |
| Charles' niece |
| Eliza |
| Charles' niece |
| Amelia |
| Child died |
| Jonah |
| Boy with invoices |
| Bill |
| Questioned Eustace about his background |
| Julie |
| Friend of Eustace, prostitute |
| Lily |
| John and Abel's sister |
| Michelle |
| Works for Mrs. Fraser |
| Lavoisier |
| Boat man |
| Debussy |
| Musician, sick |