1 | Elspeth | McGillicuddy | The woman who witnessed the train murder. |
| Margaret | | Elspeth's friend. |
| Robby | | Margaret's son. |
| Jean | | Margaret's daughter. |
| Hector | | Margaret's son. |
| Jane | Marple | Elspeth's friend. |
2 | Dr. | Haydock | Jane's doctor. |
| Frank | Cornish | Police officer. Jane's friend. |
3 | Roderick | | Elspeth's son. |
| Henry | Clithering | Inspector Craddock's grandfather. Jane's friend. |
| Raymond | West | Jane's nephew. Novelist. |
| David | West | Jane's great nephew. |
| Griselda | | Jane's friend. |
| Leonard | | Griselda's son. |
| Florence | Hill | Jane's old maid and servant. |
| Lucy | Eyelesbarrow | Jane's acquaintance. A famous and intelligent woman. |
4 | | | Rutherford Hall - A country house with extensive grounds. |
| Josiah | Crackenthorpe | A very rich manufacturer. Built the Rutherford Hall. |
| Luther | Crackenthorpe | Josiah's son. Lives in Rutherford Hall.
Aka: Old Crackenthorpe. |
| Edmund | Crackenthorpe | Luther's eldest son. Died in the war. |
| Emma | Crackenthorpe | Luther's daughter. |
| Mrs. | Kidder | The Crackenthorpes' housekeeper. |
| Mrs. | Hart | The Crackenthorpes' housekeeper. |
| Mrs. | Kennedy | Emma's friend. |
| Cedric | Crackenthorpe | Luther's son. Painter. |
| Harold | Crackenthorpe | Luther's son. Company director. |
| Bryan | Eastley | Edith's husband. Former Squadron Leader. |
| Edith | Eastley | Luther's daughter. Deceased. aka: Edie. |
| Alexander | Eastley | Edith and Bryan's son. Luther's grandson. |
5 | Old | Hillman | The Crackenthorpes' deaf gardener. |
| James | Stoddart-West | Alexander's school friend. |
6 | Inspector | Bacon | Police inspector. |
| Dr. | Quimper | Luther's doctor. |
| Johnstone | | Police surgeon. |
| Sanders | | Police officer. |
7 | Mr. | Wimborne | Senior partner Crackenthorpes' legal affair. Family lawyer. |
8 | Dermot | Craddock | A detective inspector from New Scotland Yard. |
| Henry | Crackenthorpe | Josiah's son. Luther's brother. |
12 | Wetherall | | A detective sergeant. Detective inspector's assistant. |
13 | Thomas | Eade | Crackenthorpes' bank manager's son. |
14 | Armand | Dessin | Dermot's friend. |
| Madame | Joilet | Owner of Ballet Maritski. |
| Anna | Stravinska | Ballet dancer. |
15 | Ellis | | Harold's secretary. |
| | Crodie | Harold's workmate. |
| Dicky | Rogers | Harold's friend. |
| Alice | Crackenthorpe | Harold's other wife. |
16 | Geraldine | Webb | Jane's old friend. |
17 | Dr. | Morris | Dr. Quimper's old, senior partner. |
19 | Sergeant | Leakie | Police officer. |
| William | Baker | Ticket collector at Brackhampton Station. |
| Josh | Simpskins | Dr. Quimper's patient. |
21 | Ernie | | Mrs. Kidder's son. |
22 | Lady | Stoddart-West | James's mother. Edmund's ex-wife. aka: Martine Dubois. |
23 | Darwin | | Harold's manservant. |
| San | Raphael | Lady Alice's friend. |
24 | Robert | Stoddart-West | Martine's husband. |
25 | Lorenzo | Tonti | Italian banker. |
| Mrs. | Stanwich | Woman who poisoned and killed her own child. |
26 | Ronnie | Wells | The solicitor's son from St. Mary Mead. Bryan's friend. |