| Douglas |
Dalton | The last priest on Blackwater Chapel. |
| Doctor |
Doom | Amelia's doctor. |
| Amelia |
Earhart | An American Aviator. |
| Marian |
Keyes | An author. |
| Graham |
Norton | Irish comedian and broadcaster. |
| October |
O'Brien | The award-winning Irish Actress. |
| Lizzy |
Parke | One of the party goers. |
| Samuel |
Smith | Henry's private investigator. |
| Henry |
Winter | Adam's favorite author. |
| Adam |
Wright | Amelia's husband who has prosopagnosia. A screenwriter. |
| Amelia |
Wright | Protagonist. AKA: Amelia Jones. |
| Bertie |
| The dog. |
| Bob |
| Amelia and Adam's dog. |
| Cassiopeia |
| The Queen in Greek Mythology. |
| Charlie |
| One of Adam's old foster parents. |
| Donna |
| One of the potential new dog owners. |
| Lucky |
| The german shepherd. |
| Nathan |
| One of Adam's colleagues. |
| Oscar |
| Robin's rabbit. |
| Pamela |
| The marriage counselor. |
| Patrick |
| The postman. |
| Patty |
| The cashier. |
| Robin |
| The runaway girl. |