| 1 | Dorothy Ann | Scarritt-McKibbin |
The woman who ran the project at 109 East Palace Avenue. Protagonist. |
| | George | Bloom | President of the
first National Bank. Dorothy's friend. |
| | Joe | Stevenson | A local
entrepreneur. |
| | Duane | Muncy | Business manager
of the new housing project. |
| | J. Robert | Oppenheimer | Head of
the Manhattan Project. AKA: Mr. Bradley, Oppie. |
| | Frances | Margaret | Dorothy's
sister. |
| | Virginia | Scarritt | Dorothy's
sister. |
| | William Chick | Scarritt |
Dorothy's father. |
| | Reverend | Scarritt | Dorothy's
well-known ancestor. |
| | Frances Davis | Scarritt |
Dorothy's mother. |
| | Alide | Bigelow | Dorothy's old
classmate. |
| | Joseph | McKibbin | Dorothy's
husband. |
| | Daniel | Drake | A leading
Cincinnati physician. |
| | Frank | Mera | Sunmount director. |
| | Harry | Mera | Frank's brother. |
| | Joseph Henry | Sharpe | Western
painter. |
| | Alice Corbin | Henderson | A
Sunmount patient. |
| | William Penhalow | Hern | Painter.
Alice's husband. |
| | Katherine | Stinson | A celebrity.
Dorothy's friend. |
| | Jim | Scarritt | Dorothy's nephew. |
| | Kevin | McKibbin | Dorothy's son. |
| | Miguel | Otero Jr | Katherine's
husband. |
| | John Gaw | Meem | Architect.
Katherine's mentor. |
| 2 | Priscilla | Greene | Oppenheimer's
secretary. |
| | Frank | Oppenheimer |
Oppenheimer's brother. |
| | Julius | Oppenheimer |
Oppenheimer's father. |
| | Robert | Milikan | A nobel
prize-winning physicist. |
| | Ernest | Lawrence | The inventor
of Cyclotron. |
| | Robert | Serber | Oppenheimer's
protégé. Los Alamos director. |
| | Kitty | Puening | Oppenheimer's
wife. |
| | Arthur | Compton | Director of the
MET Lab. |
| | Enrico | Fermi | A Nobel
prize-winning Italian physicist. |
| | Gregory | Breit | Oppenheimer's
predecessor. |
| | Leslie | Groves | A professional
soldier and trained engineer. Oppenheimer's boss. |
| | Franklin | Roosevelt | The current
US President. |
| | | Nichols | Groves's colonel. |
| | Leo | Szilard | A Hungarian
physicist and inventor. |
| | Edwin | Macmillan | One of
Lawrence's proteges. |
| | Jean | Tatlock | Oppenheimer's
former fiancé. |
| | Isidor | Rabi | One of
Oppenheimer's men. |
| | John | Manley | An experimental
physicist. |
| | Edward | Teller | A Hungarian
physicist. |
| 3 | | Dudley | Colonel. |
| | Dr. | Conant | Groves's technical
adviser and liaison. |
| | Hans | Bethe | One of
Oppenheimer's colleagues. |
| | Bob | Bacher | A rad lab recruit. |
| | Ed | McMillan | A rad lab recruit. |
| | Luis | Alvarez | A rad lab
recruit. |
| | Kenneth | Bainbridge | A rad lab
recruit. |
| | Norman | Ramsey | A rad lab
recruit. |
| | Rose | Bethe | Hans's wife. |
| | Charlotte | Serbert | Serber's
wife. |
| | Anne | Wilson | Groves's
assistant. |
| | Jean | O'leary | Groves's
administrative assistant. |
| 4 | Don Diego | Arias de Quiros |
Spanish conquistador. |
| | Peter | Oppenheimer |
Oppenheimer's son. |
| | Edward | Condon | Personnel
manager. |
| | Isabel | Bemis | Condon's
assistant. |
| | Peggy Pond | Church | Dorothy's
friend. A Santa Fe writer. |
| | Elsie | McMillan | Ed's wife. |
| | Samuel | Allison | Los Alamos's
director. |
| | Arthur | Ryder | The Chairman of
the Sanskrit Department. |
| | Emilio | Segre | An Italian
physicist who escaped Mussolini's regime. |
| | Jean | Tatlock | Serber's
long-time girlfriend. |
| 5 | Leon | Fisher | One of the
recruits. |
| | Lamy | | The archbishop. |
| | Brian Boru | Dunne | A town
reporter. |
| | Will | Harrison | Editor of the
Santa Fe New Mexican. |
| | Harold | Agnew | A graduate
student. |
| | Beverly | | Agnew's wife. |
| 6 | Whitney | Ashbridge | Groves's new
CO. |
| | Jane | Roberg | A physicist who
worked on calculations for the fusion weapon. |
| | Felix | Bloch | A Swiss-born
theoretician. |
| 7 | Harriet | Peterson | A red-headed
nurse at Los Alamos. AKA: Petey. |
| | Timoshenko | | Petey's dog. |
| | Smitty | Carlisle | The post's
lawyer. |
| | Louis | Hempelmann | The project's
medical director. |
| | Elinor | Pulitzer | Hempelmann's
girlfriend. |
| | David | Dow | Bacher's
brother-in-law. |
| | Henry | Barnett | Helpmann's
recruit and former classmate. |
| | James | Nolan | Helpmann's recruit
and former classmate. |
| | Payk | Hagemann | Helpmann's
recruit and former classmate. |
| | Shirley | Barnett | Henry's wife. |
| 8 | Vera | Williams | John's wife. |
| | Anita | Martinez | Dorothy's
recruit. |
| | Maria | Martinez | Anita's
mother-in-law. New Mexican pueblo artist. |
| | Bob | Wilson | The first elected
chairman. |
| 9 | Edith | Warner | Station's
mistress. |
| | Marjorie | Hall | Bradner's wife. |
| | Barbara | Long | A popular Science
teacher. |
| 10 | Rossi | Lomanitz | One of
Oppenheimer's physicists. |
| | Lyall | Johnson | The local chief. |
| | George | Eltenton | British
engineer. |
| | Colonel | Pash | Eltenton
superior. |
| | Peer | de Silva | Los Alamos's
security officer. |
| | Emily | Morrison | Phil's wife. |
| | Joseph | Dallet | Kitty's
ex-husband. |
| | Steve | Nelson | Dallet's close
friend. |
| | Richard Stewart | Harrison |
Kittty's second husband. |
| | Wilhelm | Keitel | Chief of Staff
of the Wermacht. |
| | John | Lansdale | Pentagon chief. |
| 11 | James | Chadwick | Discoverer of
the Neutron. |
| | Niels | Bohr | Father of Quantum
Physics. AKA: Nicholas Baker. |
| | Lord | Cherwell | Churchill
Scientific Advisor. |
| | Jim | Baker | Bohr's son AKA: Aage. |
| | Frederic | de Hoffman | A Harvard
physicist who joined the team. |
| | George | Kistiakowsky | A Harvard
chemist. |
| 12 | Walter | Alvarez | Mayo Clinic
physician. |
| | Cecil | Frey | An old-time
rancher. |
| 13 | James | Conant | Groves's primary
Science advisor. |
| | | Neddermeyer | The new Division
Head. |
| | Deke | Parsons | Oppenheimer's
boss. |
| | Jim | Tuck | A member of the
British Mission. |
| | Bill | Hudgins | One of the
project's new hires. |
| | Eleanor | Gregg | Dorothy's
friend. A Santa Fe writer. |
| | T.O. | Palmer | SED's new CO. |
| | Klaus | Fuchs | A German member of
the mission. |
| | Harry | Gold | An American
courier. |
| 14 | Stan | Ulam | A Polish
mathematician. |
| | Jean | Bacher | Bob's wife. |
| | Phyllis | Fisher | Leon's wife. |
| | Leon | Fisher | A physicist.
Phyllis's husband. |
| 15 | Otto | Frisch | The man who
proposed an extremely bold experiment. |
| | Gerald | Tyler | New Commanding
officer. |
| | Harry | Truman | The current US
President. |
| 16 | Robert | Patterson | Under
Secretary of War. |
| | Thomas | Farrell | Deputy Military
Commander of the Manhattan Project. |
| | Henry | Stimson | Secretary of
War. |
| | Herbert | Hoover | A colonel in
World War I. Stimson's superior. |
| | George | Marshall | One of the
committees. |
| | Ralph | Bard | Under Secretary of
the Navy. |
| | William | Clayton | Assistant
secretary of the State. |
| | George | Harrison | Stimson's
special advisor. |
| | William | Laurence | A New York
Times reporter. |
| | Helen | | Sam Allison's wife. |
| | Jack | Hubbard | A meteorologist. |
| 17 | Anne | Wilson | Oppenheimer's
secretary. |
| 18 | Herbert | Smith | Oppenheimer's
old teacher. |
| 19 | Martha | Field | The owner of the
building at 109 East Palace. |
| | Robert | Hutchins | President of
the University of Chicago. |
| | Harold | Urey | Los Alamos
University Principal. |
| | Harry | Daghlian | Los Alamos's
first casualty. |
| | Charles | Critchfield |
Oppenheimer's new recruit. |
| 20 | James | Byrnes | Secretary of
State. |
| | Dean | Acheson | Under Secretary. |
| | Herbert | Marks | Acheson's legal
aide. |
| 21 | Joseph | McCarthy | A senator. |
| | Bourke | Hickenlooper | A senator. |
| | J. Edgar | Hoover | FBI director. |
| | Bernard | Peters | Oppenheimer's
talented former student. |
| | Sylvia | Crouch | Former Officer
of the American Communist Party. |
| | Paul | Crouch | Sylvia's husband. |
| | Roy | Cohn | Prosecution aide. |
| | Roger | Robb | AEC attorney. |
| | Herb | Marks | Oppenheimer's
lawyer. |
| | Joe | Volpe | Mark's partner. |
