| Craig |
Aspinall | Island caretaker |
| Richard |
Barber | One of Daniel's patients |
| Adam |
Carlton | Drowning victim |
| Paul |
Deacon | Missing person |
| Darren |
Field | Man who witnessed the killings |
| Marie |
Field | Darren Field's wife |
| Liam |
Fleming | Detective who contacts Daniel |
| Charlie |
French | Missing person |
| Robbie |
Garforth | Murder victim |
| Daniel |
Garvie | Protagonist. Aka: Dan |
| John |
Garvie | Daniel's father |
| Brian |
Gill | Rosemary Saunders's partner |
| Callum |
Griffiths | Detective Chief Inspector |
| Oliver |
Hunter | Missing accountant |
| Michael |
Johnson | Boy Daniel believes is connected to the case |
| Benjamin |
Joyce | Detective Inspector |
| Graham |
Lloyd | Murder victim |
| Sean |
Loughlin | Missing person |
| William |
MacGuire | Owner of the abandoned farm |
| Terrence |
O'Hare | Author of The Man Made of Smoke |
| Abigail |
Palmer | Murder victim and James Palmer's mother |
| James |
Palmer | Kidnapped victim |
| Pied |
Piper | Serial killer active during Daniel's childhood |
| Sarah |
Ross | Daniel's childhood friend |
| Andrew |
Sanderson | Detective |
| Sally |
Sanderson | Andrew Sanderson's wife |
| Rosemary |
Saunders | Murder victim |
| Frank |
Smith | Detective Chief Inspector |
| David |
Watson | Fleming's police partner |
| Barnaby |
| James Palmer's toy lion |
| Eric |
| Prison guard |
| Fiona |
| Sarah's coworker |
| Lara |
| Daniel's ex-girlfriend |
| Myra |
| Daniel's secretary |
