| Millie |
Accardi | Protagonist. Aka: Wilhelmina Calloway. |
| Nicolas |
Accardi | Millie and Enzo's son. Aka: Nico. |
| Spencer |
Archer | Nico's classmate. |
| Janice |
Archer | Spencer's mother. |
| Mrs. |
Cleary | Nico and Spencer's teacher. |
| Margaret |
Corkum | Frost elementary principal. |
| Lois |
Duncan | Author of Stranger with my Face. |
| Mrs. |
Green | One of Millie's clients. |
| Little |
Kiwi | Nico's pet. |
| Suzette |
Lowell | Millie's new neighbor. |
| Jonathan |
Lowell | Suzette's husband. |
| Braden |
Lundie | Missing kid. |
| Ms. |
Marcus | Ada's former teacher. |
| Benito |
Ramirez | N.Y.P.D detective, Enzo and Millie's close friend. |
| Mrs. |
Ratner | Ada's teacher. |
| Amanda |
Sudermann | Millie's doctor. |
| Cecelia |
Winchester | A public defender, Millie's former client. |
| Ada |
| Millie and Enzo's daughter. |
| Antonia |
| Enzo's sister. |
| Donna |
| The nurse supervisor. |
| Gabe |
| Ada's classmate. |
| Hunter |
| The boy who likes Ada. |
| Jed |
| Martha's abusive husband. |
| Martha |
| The Lowell's housemaid. |
| Serena |
| The bank customer service agent. |
| Ted |
| Nico's baseball coach. |
| Willard |
| Detective-in-charge. |