| Colm |
Bannon | Detective. |
| Isabelle |
Carney | Saw Dominic as a ghost. |
| Dean |
Colvan | Man who assaulted Toby. |
| Maurice |
Devine | Social Historian. |
| Seamus |
Dooley | Friend of Toby. |
| Susanna |
Farrell | Toby's cousin. |
| Tom |
Farrell | Susanna's husband |
| Sallie |
Farrell | Susanna's daughter |
| Zach |
Farrell | Susanna's son |
| Dominic |
Ganly | Skeleton in tree. |
| Bernard |
Gilder | Homeless man slept in an alley. |
| Cara |
Hannigan | Friend of Toby. |
| Miriam |
Hennessee | Toby's aunt. |
| Oliver |
Hennessee | Toby's uncle. |
| Phil |
Hennessee | Susanna's father. |
| Hugo |
Hennessee | Toby's uncle, oldest of brothers |
| Toby |
Hennessey | Narrator and Protagonist. |
| Leon |
Hennessey | Toby's cousin. |
| Louisa |
Hennessey | Susanna's mother. |
| Detective |
Kerr | Rafferty's partner. |
| Lauren |
Malone | Friend of Toby. |
| Gerry |
Martin | Detective. |
| Eoghan |
McArdle | Schoolmate. |
| Declan |
McGinty | Friend of Toby. |
| Elaine |
McNamara | Clare's 16-year-old daughter. |
| Dr. |
Mengele | Susanna's OB/GYN. |
| Lorcan |
Mullan | Schoolmate. |
| Lara |
Mulvaney | Friend of Nessa. |
| Edward |
O'Hagan | Amelia Wozniak's grandfather. |
| | O'Hagans |
Haskins' neighbors. |
| Jason |
O'Halloran | Attended a party at Hugo's. |
| Mrs. |
O'Loughlin | Hugo's neighbor. |
| Darragh |
O'Rourke | Dominic fought with. |
| Mike |
Rafferty | Detective. |
| | Scanlon |
Police officer. |
| Amelia |
Wozniak | Hugo's family tree client. |
| Melissa |
| Toby's girlfriend. |
| Sean |
| Friend of Toby. |
| Richard |
| Owner of art gallery. |
| Audrey |
| Sean's girlfriend. |
| Tiernan |
| In charge of exhibitions at the gallery. |
| Gouger |
| Bohemian artist. |
| Aideen |
| Accountant. |
| Jenna |
| Dec's most recent ex. |
| Meagan |
| Melissa's roommate. |
| Nialk |
| Melissa's annoyance. |
| Charlotte |
| Toby's first kiss |
| Jeanette |
| Toby's teenage friend. |
| Carsten |
| Leon's boyfriend. |
| Faye |
| Friend of Toby. |
| Nessa |
| Friend of Audra. |
| Bren |
| Attended a party at Hugo's |
| Rocky |
| Attended a party at Hugo's |
| Mal |
| Attended a party at Hugo's |
| Johan |
| Leon's boyfriend in Amsterdam. |
| Haskins |
| Diary fellow. |
| Clare |
| Sister of Haskin's wife. |
| Jasmine |
| Friend of Toby. |
| Athelstan |
| Taught Suzanna dulcimer. |
| Caoimhe |
| Datable girl at Toby's new job. |
