| 1 | Zoe | Morgan | Rose's older sister. |
| | Rose | Morgan | Diagnosed with leukemia at the age of three. |
| | Beth | | Zoe and Rose's mother. |
| | Brad | | Zoe and Rose's father. |
| | Ollie | | The mouse in Brad's book. |
| | Marina | | Ollie's wife. |
| | Charlie | | One of Marina and Ollie's children. |
| | Seraphina | | One of Marina and Ollie's children. |
| | Pinkie | | Rose's teddy bear. |
| | Pam | | Brad's former therapist and new wife. |
| | Christopher | | Zoe's half-brother. |
| | Ashley | | Zoe's half-sister. |
| | Austin | Roberts | Child advocacy lawyer. |
| | Constance | Roberts | Austin's mother. Aka: Connie. |
| | Hank | | Beth's boyfriend. |
| | Jaime Rose | Roberts | Zoe and Austin's daughter. |
| 2 | Cathy | Clark | Jaime's pediatrician. |
| | | | SIDS - sudden infant death syndrome |
| | Amelia | | Austin's oldest brother's wife. |
| 4 | Jamala | | Jaime's nanny. |
| | | Johnsons | Jamala's former employer. |
| | Fiona | | Jaime's new nanny. |
| | George | | Constance's husband. |
| 7 | Seth | | Constance's grandson. |
| 8 | | | ADHD - Attention-Deficit/Hyperactivity Disorder |
| 9 | Mrs. | Ellis | Jaime's teacher. |
| | Mr. | Bob | Teaching assistant. |
| | Dr. | Parker | Ear, nose and throat specialist. |
| 10 | Molly | | George's dog. |
| | Patrick | | Constance's grandson. |
| 13 | Jane | Yamaguchi | Plastic surgeon. |
| | Paul | Anders | Psychiatrist. |
| 16 | Dan | Knoll | Child Protective Services investigator. Aka: Big Red. |
| | Pat | Fitzgerald | Dan's former coach. |
| | Yvette | | Dan's boss. |
