| Miss | Adams | Kennington's secretary. |
| | Allerton | Cynthia's husband. |
| Almondsley- | West | Charles' friend. |
| Solomon | Amberson | Barrister at Gray's Inn. |
| William | Ampleforth | Captain. In charge of the Navy's own shipping yard. |
| Eleanor | Arden | Charles and Elizabeth's friend. |
| | Aspern | British diplomat in Russia |
| | Bartley | Charles' friend. Son of an Earl in Nottinghamshire. |
| | Bassenger | Baronet. |
| | Becker | Constable. |
| | Billingsley | 17th Earl of Sedgewood. Charles' second cousin. |
| | Blackstone | Foreman at Corcoran and Sons. |
| Eliza | Blaine | Acquaintance of Charles and Elizabeth. |
| Adeline | Bold | 14 years old. Lives in Liverpool. |
| | Bryant | Constable. |
| Nathaniel | Butler | Clerk from the Customs House. |
| Theobald | Cairn | Senior Manager at Corcoran and Sons. |
| Anthony | Callahan | Surgeon. |
| Riley | Callum | Consulting Surgeon. |
| | Capston | Reporter from the Mail. |
| | Carrington | One of the Clerks at Corcoran and Sons. |
| Carroll | Cary | Owns an Engineering firm. |
| Sarah | Cather | Lives in Manchester. |
| Lucia | Chatham | Lady. Charles' friend. |
| Rupert | Clarkson | Retired Engineer. |
| | Collins | Boathouse keeper. |
| | Columbus | Inspector from Scotland Yard. |
| Mrs. | Cooley | Landlady of Chequers couching inn. |
| Eliza | Corcoran | George's daughter. |
| George | Corcoran | Owner of Corcoran and Sons. |
| | Courtenay | Charles' friend. |
| Mr. | Crump | Butler at Lenox house. |
| John | Dallington | Son of the Duchess of Marchmain. |
| | Deere | Lady. Aristocrat. |
| | Exeter | Inspector from Scotland Yard. |
| Charles | Field | Inspector from Scotland Yard. |
| Elizabeth Jane | Gray | Lady. Charles' close friend. |
| | Hamilton | Lady. Former employer of Mrs. Huggins. |
| | Hamilton | Lord. Husband of Lady Hamilton. |
| | Hitchens | Driver of Edward's carriage. |
| Maria | Horsepool | New charwoman in Rupert's house in Dulwich. |
| | Houghton | Earl. Elizabeth's father. |
| Mrs. | Huggins | Charles' housekeeper. |
| Mrs. | Hutchinson | Landlady of Jonathan. |
| Mr. | Johanssen | Seaman. |
| | Johnson | Edward's close friend. |
| | Jones | One of the Clerks at Corcoran and Sons. |
| Winston | Kellogg | Sir. Owner of Randall House. |
| Mr. | Kennington | Editor of the Challenger. |
| Joshua | King | Rupert's friend. |
| | Laurence | Rich. Everyone expected him to marry Lucia. |
| Thomas | Lawrence | Painted the portrait of Charles' mother. |
| Peter | Leckie | Acquaintance of Eliza. |
| | Ledderer | Lady. Aristocrat. |
| Charles | Lenox | Protagonist. Aristocrat. |
| Edmund | Lenox | 11th Baronet of Markethouse. Charles' brother. aka Ed. |
| Edward | Lenox | Sir. Edmund and Charles' father. |
| Emily | Lenox | Edmund's wife. aka Molly. |
| Homer | Lenox | Charles' cousin. |
| Josiah | Lenox | Charles' cousin. |
| | Lewis | Rupert's friend. |
| Maude | Lyons | Lives in Bournemouth. |
| | Marchmain | Duchess. Elizabeth's friend. |
| | Markham | Lord. Future Duke of Rotherham. |
| Richard | Mayne | Sir. Aristocratic head of Scotland Yard. |
| Thomas | McConnell | Scottish Doctor. |
| | Middleton | Constable. |
| Charles A. | Murray | Sir. Consul to Egypt. |
| Robert | Peel | Sir. Founder of the very first police force in the city. |
| Jonathan | Pond | One of the Clerks at Corcoran and Sons. |
| | Rivers | Edward's Doctor. |
| | Robinson | Edward's neighbor. |
| Jacob A. | Schoemaker | Charman of Randall House. |
| Mr. | Sherman | Porter at Scotland Yard. |
| | Sinex | Inspector from Scotland Yard. |
| Hugh | Smith | Charles' friend. |
| Cynthia | Stark | Charles' acquaintance. |
| Jack | Stuart | Rupert's friend. |
| Mrs. | Taylor | Cousin of Elizabeth's husband. |
| | Wallace | Solicitor of the Lenox family. |
| | Wassner | Rupert's friend. |
| | Wilkes | Lady. Aristocrat. |
| | Wilkinson | Richard's clerk. |
| Ella Beth | Williams | Rejected Jonathan's marriage proposal. |
| P. C. | Wright | Constable. |
| Arnold | | Blacksmith in Charles' hometown in Sussex. |
| Carter | | Works at Lenox house in Sussex. Stationed at the gatehouse. |
| Cinder | | Charles' 14 year old horse. |
| Clara | | Charles' servant. |
| Clarence | | Edward's beloved horse. |
| Cynthia | | Lady. Met Charles when he was in Oxford. |
| Emma | | Lady. Edmund and Charles' mother. |
| Graham | | Charles' trusted manservant. |
| James | | Elizabeth's husband. Heir to an Earldom. |
| James | | Edmund's son. |
| Julian | | Horse breeder. |
| Lily | | Rupert's housemaid. |
| Martha | | Charles' Aunt. |
| Nellie | | Charles and Elizabeth's friend. |
| Roger | | Footman employed by Charles. |
| Susan | | John's governess. |
| Terrance | | Old servant at Lenox house. |
