| Breda | Donelly | Joshua's grandmother. Noelle's mother. |
| Henry | Donelly | Joshua's grandfather. Noelle's father. |
| Joshua | Donelly | Noelle's nephew. |
| Michaela | Donelly | Noelle's sister. Deceased. |
| Noelle | Donelly | Ellie's tutor. Poppy's mother. |
| Poppy | Donelly | Floyd and Noelle's daughter. |
| Sam | Donelly | Joshua's brother. Poppy's cousin. |
| Floyd | Dunn | Laurel's boyfriend. Poppy and Sara-Jade's father. |
| Becky | Goodman | Theo's mother. |
| Mr. | Goodman | Becky's husband. Theo's father. |
| Theo | Goodman | A boy who likes Ellie. Ellie's boyfriend. |
| Dr. | Khan | Noelle's psychiatrist. |
| Ellie | Mack | The missing daughter of Laurel and Paul. |
| Hanna | Mack | Ellie's sister. Laurel and Paul's daughter. |
| Jake | Mack | Ellie's father. |
| Laurel | Mack | Ellie's mother. |
| Paul | Mack | Laurel's husband. |
| Nick | Robinson | A policeman. |
| Kate | Virtue | Sara-Jade's mother. |
| Sara-Jade | Virtue | Floyd and Kate's daughter. Aka: SJ. |
| Amy | | Noelle's hamster. |
| Blue | | Jake's live-in-partner. |
| Bonny | | Paul's new girlfriend. |
| Clara | | Joshua's cousin. Noelle's niece. |
| Dane | | The detective. |
| Dora | | Tania's assistant. |
| Helen | | Laurel's officemate. |
| Jackie | | Laurel's friend. |
| Mathilde | | Floyd's ex-girlfriend. |
| Ruby | | Laurel's mother. |
| Tania | | Laurel's hairstylist. |
| Teddy | | Ellie's teddy bear. |
| Tom | | Sara-Jade's friend. |
| Tony | | Noelle's ex-boyfriend. |
| Trudy | | Noelle's hamster. |
