| Albie |
Byrne | Phoebe's brother, Savannah's ex-husband. |
| Phoebe |
Byrne | Greta's friend she met in her hiking club. |
| Garda Orla |
Connolly | The guard who broke the news of Aimee's death. |
| Moira |
Fitzpatrick | The Fitzpatricks' mother. |
| Senan |
Fitzpatrick | Moira's son. |
| Tilly |
Fitzpatrick | Moira's daughter. |
| Celeste |
Geary | One of Susan's neighbors. |
| Cody |
Geary | Celeste's son. |
| Nika |
Geary | Celeste's daughter. |
| Warren |
Geary | Celeste's husband. |
| Savannah |
Holmes | The girl where Susan has a history of mixed-up package, murdered. |
| Detective |
Kellerman | Lead detective on the case. |
| Leesa |
Khoury | Susan's sister. |
| Maeve |
Khoury | Susan's niece, Leesa's daughter. |
| Samir |
Khoury | Leesa's husband. |
| Jon |
Mullane | Susan's husband. |
| Bella |
O'Donnell | Susan's daughter. |
| Susan |
O'Donnell | Protagonist. |
| Aimee |
Quinlan | Warren's mistress, murdered. |
| Rory |
Quinlan | Aimee's husband, murdered. |
| Juliette |
Sullivan | Celeste's best friend. |
| Juliette |
Sullivan | Moira's neighbor. |
| Ariana |
Webb | One of Nika's friends. |
| Aoife |
| Susan's niece, Leesa's daughter. |
| Ariana |
| One of Nika's friends. |
| Benedict |
| Jon's assistant. |
| Felipe |
| Venetia's husband. |
| Greta |
| Susan's sister. |
| Jess |
| Nika's friend. |
| Jessica |
| Nika's friend. |
| Ms. Costello |
| The vice-principal. |
| Orla |
| The speaker. |
| Paddy |
| Moira's neighbor. |
| Venetia |
| Bartender, Aimee's sister. |
| Zach |
| Ariana's boyfriend, the boy Nika is seeing. |
