| Chet |
Baker | American jazz trumpeter and vocalist |
| Imogen |
Carrey | One of the new teaching associates |
| Principal |
Copeland | The school's principal |
| Miles |
Davis | American jazz trumpeter and composer |
| Brett |
Dawson | Connor's trainer |
| Ella |
Fitzgerald | American jazz singer |
| Mrs. |
Hoffmeier | Georgie's teacher |
| Rachel |
Ingram-Speltz | One of the school volunteers |
| Daria |
Jameson | One of the moms at Georgie's school |
| Nicole |
Kidman | Australian actress |
| Dr. |
Kirkwood | Neurologist |
| Gabrielle |
Marie Nichols | Camille's real name |
| Lucinda |
Nichols | Camille's mother |
| Mrs. |
Pendleton | One of the school teachers |
| Camille |
Prescott | Narrator and protagonist |
| George |
Prescott | Jacqueline's husband; Georgie's grandfather |
| Georgiana |
Prescott | Camille's daughter. Aka: Georgie |
| Jackson |
Prescott | Camille and Will's son |
| Jacqueline |
Prescott | Georgie's grandmother |
| William |
Prescott | Camille's husband. Aka: Will |
| Shannon |
Runzie | Clinical psychologist |
| Grant |
Speltz | Rachel's son |
| Kyle |
Speltz | Rachel's husband |
| Renata |
Speltz | Grant's grandmother |
| Alyssa |
Zimmerman | Clare's daughter |
| Avery |
Zimmerman | Clare's daughter |
| Clare |
Zimmerman | One of the school volunteers |
| Connor |
Zimmerman | Clare's husband |
| Alyssa |
| Gabrielle's classmate |
| Amelia |
| Georgie's friend |
| Annette |
| The school secretary |
| Bestie |
| Georgie's imaginary friend |
| Gabrielle |
| Camille's flytrap |
| Huggy |
| Camille's stuffed toy |
| Imani |
| Receptionist at the neurology center |
| Margaret |
| Camille's imaginary friend |
| Mark |
| Lucinda's boyfriend |
| Taylor |
| Imani's colleague |
