| 1 | Camb | | The station sergeant. |
| | Harry | Wild | The chief reporter of the Kingsmarksham courier. |
| | Reg | Wexfrod | The police chief inspector. |
| | Mike | Burden | The police inspector. Reg's associate. |
| | Genma | Lawrence | The missing boy's mother. |
| | Stella | Rivers | One of the missing persons. |
| | Martin | | The station sergeant. |
| | Gates | | The station sergeant. |
| | Peach | | One of Wexford's associates. |
| | Loring | | One of Wexford's associates. |
| | Grace | Woodville | Jenny's sister. |
| | Jean | Burden | Mike's 1st wife. |
| | John | Burden | Mike's son. |
| | Pat | Burden | Mike's daughter. |
| 2 | John | Lawrence | The missing boy. |
| | Gary | Dean | John's friend. |
| | Julian | Crantock | John's friend. |
| | Janet | Crantock | Julian's mother. |
| | Mrs. | Dean | Gary's mother. |
| | Mrs. | Mitchell | The woman who gave information to the police. |
| | Andrew | Rushworth | One of John's playmates. |
| | Eileen | Rushworth | Andrew's mother. |
| 3 | Stewart | McDowell | Ian's twin. |
| | Ian | McDowell | Stewart's twin. One of John's playmates. |
| | Ivor Lionel | Swan | Stella's stepfather. |
| | Rosalind | Swan | Stella's mother. |
| | Miss | Williams | The woman who runs Stella's school. |
| | Margaret | Fenn | Miss William's assistant. |
| | Walter | Hill | The man who offered Stella a lift. |
| | Dr. | Lomax | A doctor in Chiltern Avenue. |
| 4 | Mrs. | Finch | Mike's neighbor. |
| | Matthew | Lawrence | John's father. |
| 5 | Dr. | Crocker | The police doctor. |
| | Rodney | Swan | Ivor Swan's father. A general. |
| | Peter | Rivers | Stella's father. |
| 6 | Blain | | A dog breeder. |
| | Leonie | West | A ballet dancer. Matthew's former lover. |
| 8 | Monkey | Matthews | An ex-con. |
| | Ruby | Branch | Monkey's lover. |
| 12 | Gregory | Devaux | Friend of Genma's parents. |
| | Polly | Davies | A policewoman. |
| | Percival | Swan | Ivor's uncle. |
| | Griswold | | The chief constable. |
| 13 | Charley | Asaubon | Monkey's friend. Aka: Charles Albert Catch. |
| | Elsie | | Charley's niece. |
| 15 | Mr. | Crantock | Julian's father. |
| | Mrs. | Ross | One of Lomax's patients. |
| | Miss | Garrett | One of Lomax's patients. |
| | Mrs. | Foster | One of Lomax's patients. |
| | Bridgett Melinda | Scott | Murdered. |
| | Augustine | Forbes | Westmorland coroner. |
| | Lillian | Potts | The Scott's chambermaid. |
| | Ralph | Scott | Bridgett's father. |
| | Ena | Scott | Bridgett's mother. |
| | Ada Margaret | Fatten | The witness on Bridget's case. |
| | George | Baleham | An agricultural worker. One of the witnesses on Bridget's case. |
| | Bernard Varney | Frensham | Ivor's friend. |
| 16 | Adelaide | Turner | Frensham's former
fiancé. |
| 17 | Thomas | Thetford | William's brother. |
| | William | Thetford | The man who walked to the police station. |
| | Sheila | Wexford | Wexford's daughter. |
| 18 | Robert | Rushworth | Andrew's father. Aka: Bob. |
| | Mrs. | Thetford | Mrs. Dean's cleaning lady. |
| 19 | Arnold Charles | Bishop | Mrs. Foster's neighbor. The mysterious man who wrote to Wexford. |
| | Raymond | Bishop | Arnold's son. |
| | Paul | Rushworth | Andrew's brother. |
| 20 | Linda | Rushworth | Eileen and Bob's daughter. |
