| Pro | Ruth | Galloway | Protagonist. An archaeology teacher and forensics expert. |
| | Harry | Nelson | The detective chief inspector. |
| | Lucy | Downey | The girl who went missing 10 years ago. |
| 1 | | | UNN - University of North Norfolk |
| | Phil | | Ruth's department head. |
| | John | Martin | A painter. |
| | Sparky | | Ruth's cat. |
| | Flint | | Ruth's cat. |
| 2 | Peter | | Ruth's ex-lover. |
| | Erik | Anderssen | Ruth's first tutor. |
| | DS | Clough | The detective sergeant. |
| 3 | Michelle | Nelson | Harry's wife. |
| | Madga | Anderssen | Erik's wife. |
| | David | | Ruth's neighbor. |
| 4 | Simon | Galloway | Ruth's brother. |
| | Cathy | | Simon's wife. Ruth's sister-in-law. |
| | Shona | | Ruth's friend. |
| 5 | Scarlet | Henderson | Another missing girl. |
| | Alice | Downey | Lucy's mother. |
| | Tom | Downey | Lucy's father. |
| | Sammy | | One of Ruth's neighbors. |
| | Ed | | Sammy's partner. |
| 6 | Cathbad | | Leader of the druids. A lab technician. Aka: Michael Malone. |
| 7 | Liam | | Shona's boyfriend. |
| | Derek | | Ed's friend. |
| | Sue | | Derek's wife. |
| | Tony | | Michelle's boss. |
| | Juan | | Michelle's boss. |
| | Laura | Nelson | Harry's daughter. |
| | Rebecca | Nelson | Harry's daughter. |
| | Nicole | | Roger's wife. Ed's friend. |
| | Roger | | Nicole's husband. |
| 8 | James | Agar | The man who killed a policeman. |
| | Anne | | Liam's girlfriend. |
| | Stephen | Naylor | The policeman that James killed. |
| | Victoria | | Peter's wife. |
| | Daniel | | Peter and Victoria's baby. |
| 10 | Alan | Henderson | Scarlet's father. |
| | Delilah | Henderson | Scarlet's mother. |
| | Derek | Fielding | Harry's first boss. |
| | Harry | Nilsson | The physics professor. |
| 11 | Bob | Bullmore | Ruth's colleague. |
| 12 | Euan | Henderson | Scarlet's sister. |
| | Ocean | Henderson | Scarlet's sister. |
| | Tobias | Henderson | Scarlet's brother. |
| 15 | Madeleine | | Michael and Delilah's child. |
| | Mr. | Tan | Ruth's student. |
| 16 | Judy | Johnson | A detective constable. |
| 23 | Whitcliffe | | A superintendent policeman. |
| 31 | Lars | | Magda's lover. |
