| 1 | Collette |
Jones |
Narrator |
| | Arabella |
| Collette's sister; deceased |
| | Henry |
| Arabella's 8-year-old cat |
| | Mike |
| Collette's current boyfriend |
| 2 | Linda |
| Woman Collette met at grief counseling |
| | Carol |
| Collette's therapist |
| | Vince |
| Leader of the grief support group |
| | Gavin |
| Mysterious man in the grief group |
| 3 | Courtney |
Barrow |
Driver who accidentally hit Collette |
| | Jackson |
| Grief group member |
| 5 | Amanda |
Morgan |
Oncologist |
| | Joe |
| Amanda's boyfriend |
| | Beth |
| Mutual friend of Joe and Amanda |
| 7 | Gloria |
Estefan |
Singer (mentioned) |
| 9 | Judy |
Blume |
Novelist (mentioned) |
| | Sara |
| Collette's friend |
| 10 |
Dr. | Harris |
Amanda's favorite radiologist |
| | Miguel |
| Hospital cleaning staff |
| 12 |
Belle | Smith |
Collette's fake name |
| 14 |
Greta | Morgan |
Amanda's daughter |
| 16 |
Mrs. | Ketcham |
Amanda's next-door neighbor |
| 19 |
Brody | Whittaker |
Hospital CEO |
| 21 |
Cindy | |
Hospital receptionist |
| 26 |
Mr. | Loren |
Local curmudgeon and neighborhood watchdog |
| 31 |
Mrs. | Garret |
Amanda's former patient |
| 32 |
Mark | |
New grief group member |
| 41 |
Officer | Foster |
Police officer who rescued Amanda |
| 42 |
Lucy | |
Jackson's wife; woman Amanda used in her experiment who later died |