| 1 | Grace |
F. Healey | Protagonist. |
| | Frankie |
| Grace's friend and workmate. |
| | Thomas |
Healey | Grace's former husband. Deceased. |
| | Mark |
Dorff | Tom's college roommate. |
| 2 | Captain |
Michaels | The royal air force attaché. |
| | Gregory |
Winslow | Director of Special Operations Executive. |
| | |
| SOE - Special Operations Executive. |
| | Eleanor |
Trigg | Chief recruitment officer SOE. Aka: Miss Trigg. |
| | Hans |
Kriegler | A former concentration camp commandant. The head of SD. |
| 3 | Marie |
Roux | One of Miss Trigg's radio operators. |
| | Tess |
Roux | Marie's daughter. |
| | Aunt |
Hazel | Marie's aunt. |
| | Richard |
| Tess's father. |
| 4 | Mortie |
| The hotdog vendor. |
| | Sam |
Altshuler | A boy that Frankie helped. |
| | Queen |
Elizabeth II | Queen of United Kingdom. |
| | Marcia |
| Grace's childhood friend. |
| 5 | Josephine |
Watkins | Marie's workmate. Aka: Josie. |
| | Madame |
Poirot | Josie's French instructor. |
| | Brya |
| Marie's workmate. |
| 6 | Colonel |
McGinty | The senior military official at Arisaig House. |
| | Professor |
Digglesby | A retired teacher from Magdalen College. |
| | Annette |
| One of Miss Trigg's radio operators. |
| | Maureen |
| A working-class girl from Manchester. Brya's colleague. |
| | Tatiana |
Trigg | Miss Trigg's sister. |
| 9 | |
| SD - Sicherheitsdienst. |
| 10 | Mr |
MacDougal | A policeman who handles Miss Trigg's case. |
| | Harry |
Truman | The current U.S. President. |
| | Sir |
Meacham | The consul. |
| 11 | Julian |
Brookhouse | The circuit leader. One of SOE's secret agents. Aka: Vesper. |
| | Albert |
| One of the secret agents. |
| | Will |
Rourke | The pilot who organized Moon Squadron. Julian's cousin. |
| 12 | Raquel |
| Mark's acquaintance in SOE. |
| | Tony |
| Raquel's husband. Mark's friend. |
| | Brian |
| An Archivist. |
| | Eileen |
Nearne | One of the secret agents of SOE. |
| 13 | Jane |
| A red-haired operator. Miss Trigg's assistant. |
| 14 | Marie |
Dubas | The legendary singer. |
| | Reba |
Brookhouse | Julian's wife. Deceased. |
| 15 | Annie |
Rider | Sally's sister. |
| | Sally |
Rider | One of Miss Trigg's radio operators. |
| 16 | Lisette |
| The proprietor of the whorehouse. |
| 18 | Dodds |
| The butler at the headquarters. |
| | Tompkins |
| One of the agents in SOE. |
| | Arlene |
O'Toole | A trainee who dropped out of Arisaig House. |
| 19 | Anders |
| The barkeep. |
| | Madame |
Turout | The safe house's landlady. |
| | Claude |
Turout | Madame Turout's son. |
| 20 | Marcia |
| Grace's girlfriend. |
| 23 | Bernadette |
Flemming | Grace's sister. |
| 24 | Thogden |
Barnett | Violet's father. |
| | Violet |
Barnett | One of Miss Trigg's radio operators. |
| 25 | Henri |
Duquet | A man who works at French Resistance. |
| | Mick |
Willis | Man who works for investigative section of War Crimes Group. |
| | Charlie |
Denson | The head prosecutor. |
| 28 | Robert |
Frost | American poet. |
| 29 | Simon |
Wise | A family law lawyer. |
| | Samuel |
Altshuler | A man who fostered Sammy. |
