| George | 5th | Edward 7th's son. |
| Edward | 7th | Queen Victoria's son. |
| Joshua Butter | Bacon | The firm's senior partner. |
| Miss | Bewdley | The garden owner. |
| Canon | Blake-Soames | Rector of St. Tancred's. |
| Maximilian | Brock | One of De Luce's Buckshaw neighbors. |
| Melville | Brown | The postmaster. |
| Frank | Buckland | The great naturalist. |
| Miss | Cool | The woman from confectionary. |
| Ned | Cropper | The odd-job boys at the Thirteen Drakes. |
| Dr. | Darby | A forensic pathologist. |
| Antony | De Luce | One of Flavia's ancestors. |
| Daphne | De Luce | Flavia's sister. AKA: Daffy. |
| Flavia | De Luce | Protagonist and Narrator. |
| Harriet | De Luce | Flavia's mother. Deceased. |
| Laurence | De Luce | Flavia's father. A colonel. AKA: Jacko. |
| Ophelia | De Luce | Flavia's sister. AKA: Feely. |
| Tarquin | De Luce | Flavia's chemist uncle. |
| William | De Luce | One of Flavia's ancestors. |
| Mr. | Denning | The organist. |
| Mrs. | Fairweather | Chairman of the Ladies Altar Guild. |
| Ernie | Forbes | The man who lost his legs and arms in the war. |
| Timothy | Greene | One of Jacko's former schoolmates. |
| Jumbo | Higginson | Jacko's old army buddy. |
| Issac | Kissing | Headmaster at Greyminster. |
| Toby | Lonsdale | One of Jacko's former schoolmates. |
| Lord | Margate | The sole purveyor of Beef Chips. |
| Richard | Mead | The author of the poison book. |
| Tilda | Mountjoy | The Bishop's Lacey library in chief. Mr. Kissing's niece. |
| Alf | Mullet | Mrs. Mullet's husband. |
| Mrs. | Mullet | De Luce's cook. |
| Edward | Oxford | The boy who shot Queen Victoria and Prince Albert. |
| Frank | Pemberton | The writer that Flavia met. |
| Miss | Pickery | The librarian. |
| Mr. | Ruggles | The man at the tower. |
| Mr. | Sanders | The only inn's guest. The corpse in Flavia's garden. Aka: Horace Bonepenny |
| Bob | Stanley | Bony's new associate. |
| Mary | Stoker | The innkeeper's daughter. |
| Tully | Stoker | Mary's father. The innkeeper. |
| Jacob | Tingle | The firm's apprentice pressman. |
| Grenville | Twining | Jacko's former housemaster. AKA: Old Cuppa. |
| Carnforth | | The notorious Hinley butcher. |
| Cleaver | | The innkeeper at The Jolly Coachman. |
| Dogger | | Jacko's factotum. AKA: Arthur Wellesley Dogger. |
| Ernie | | The bus driver. |
| Geordie | | Miss Cool's collie. |
| Gladys | | Flavia's bicycle. |
| Glossop | | A constable. |
| Graves | | Detective sergeant. |
| Hetty | | Miss Pickery's sister. |
| Hewitt | | The inspector. |
| Linnet | | The constable. |
| Margaret | | Alf's sister. |
| Quarington | | Pemberton's publisher. |
| Ringer | | Dr. Kissing's grandfather. |
| Roger | | Miss Pickery's cat. |
| Simpkins | | Jacko's former classmate. |
| Woolmer | | Detective sergeant. |