Pro | Gus | | Eben's sailplane teacher. |
| Chuck | | A skydiver Eben had collision with in middle of the sky. |
| Eben | Alexander III | A neurosurgeon. Protagonist and Narrator. Aka: Dr. A. |
| | | NDE - Near Death Experience. |
1 | Holley | Alexander | Eben's wife. |
| Vic | | Eben's college roommate Holley formerly dated. |
| Bill | Wilson | Eben and Holley's bestfriend. |
| Patty | Wilson | Bill's wife. Eben and Holley's bestfriend. |
| Eben | Alexander IV | Eben and Holley's son. |
| Bond | Alexander | Eben and Holley's son. |
| | | KPC - Klebsiella Pneumoniae Carbapenemase. |
2 | Laura | Potter | Former workmate.
Physician when Eben was taken to ER. |
3 | Dr. Robert | Brennan | One of Laura's associates.
Infectious diesease specialist. |
4 | | | CSF - Cerebrospinal Fluid. |
| | | APACHE II - Acute physiology and chronic health evaluation. |
| Michael | Sullivan | Eben's neighbor. A rector in Episcopal Church. |
| Sylvia | White | Holley's longtime friend. |
| Betsy (1) | Alexander | Eben's youngest sister in his adoptive family. |
| Jean | Alexander | Eben's oldest sister in his adoptive family. |
| David | | Jean's husband. |
6 | | | MRI - Magnetic Resonance Image. |
9 | Henry | Vaughan | A 70th century Christian poet. |
| Betty | Alexander | Eben's adoptive mother. |
| Eben | Alexander Jr. | A neurosurgeon. Eben's adoptive father. |
| Donald | Matson | Eben Jr's classamate at Harvard. |
| Dr. Frand | D Ingraham | The last residents trained by Dr. Harvey. |
| Dr. David | L. Kelly | Eben Jr's long-time partner. |
11 | Ann | Michael | Eben's biological mother. |
| Richard | Michael | Eben's biological father. |
| Kathy | Michael | Eben's biological sister. |
| David | Michael | Eben's biological son. |
| Dr. Crawford | | Ann's ob-gyne on her first child. |
| Virginia | Dare | Ann's first child. |
| Bob (1) | | Richard's brother. |
| Bob (2) | | Richard's brother-in-law. |
| Betsy (2) | | Eben's biological sister. |
14 | Albert | Einstein | A theoretical Physicist. |
15 | Isaac | B. Singer | An American-Polish writer. |
16 | Susan | Reinthes | Holley's close friend. |
17 | Dr. Jay | Loeffler | Former partner developing stereotatic radiosurgery program. |
| Steve | Tatter | Eben's friend. A neurosurgeon. |
19 | Peggy | | Eben's sister-in-law. Holley's sister. |
| Robbie | | Betsy Alexander's husband. |
| Kate | | Robbie and Betsy's daughter. |
20 | Page | Sullivan | Michael's wife. |
21 | Dr. Scott | Wade | Eben's main doctor. |
25 | Jackie | | Holley's friend. |
| Ron | | Jackie's husband. |
28 | Soren | Kierkegard | A Danish pilosopher. |
29 | Raymond | Moody | Medical student published a book called "Life after Life". |
| George | Ritchie | Man in Moody's book who had near death experience. |
30 | Herman | Melville | An American novelist. |
| George | | Sussanna's late husband. |
31 | John | Eccles | A neurophysiologist. |
| | | REM - Rapid Eye Movement. |
| John | | Eben's friend and colleague whom he visits after coma. |
33 | Rene | Descartes | A French philosopher. |
| Werner | Heisenberg | A 1920s Physicist. |
| David | Chalmers | The author of the book called "The Brilliant Mind". |
| | | TOE - Theory of Everything. |
| Wolfgang | Pauli | One of the fathers of Quantum Physics. |
| Niels | Bohr | One of the fathers of Quantum Physics. |
| Erwin | Schrodinger | One of the fathers of Quantum Physics. |
| James | Jeans | One of the fathers of Quantum Physics. |
| Robert | Monroe | The father of the Monroe Institute in Faber, Virginia. |
35 | Elisabeth | Kubler-Ross | The author of the book called "On Life After Death". |
| | | Eternea - A nonprofit publicly supported charity Eben founded. |
| John | R. Audette | Eben's colleague and friend. Eben's co-founder of Eternea. |