| Jason |
Black | Leo's colleague |
| Serena |
Burns | Narrator and Leo's mistress. Aka: Melanie Serena |
| Dr. |
Chen | Doctor of Serena's mother |
| Mrs. |
Denton | Leo's former client |
| Peter |
Denton | Mrs. Denton's grandson |
| William |
Denton | Peter's father |
| Peter |
Elias | Man who accidentally killed Matty |
| Martin |
Gantry | Head of Gantry Real Estate and Leo's boss |
| Mr. |
Hattersley | School principal |
| Dr. |
Julian | Doctor and Diana's new lover |
| Diana |
Palmer | Mother of the missing child |
| Leo |
Palmer | Diana's husband |
| Rowan |
Palmer | Diana's son |
| Sawyer |
Palmer | Diana's missing son |
| Mr. |
Pickles | Serena's cat |
| Mr. |
Sharma | New patient |
| Jeremy |
Strata | Name Serena appears as on Leo's phone |
| Adam |
| Prisoner |
| Bently |
| Serena's childhood neighbor |
| Blake |
| Leo's colleague |
| Gemma |
| Receptionist at Winfield Care Home |
| Graham |
| One of Leo's divorced friends |
| Ivan |
| One of Leo's divorced friends |
| Jack |
| Runs the smash repair business |
| Jessica |
| Lawyer |
| Joe |
| Peter's co-worker |
| Joel |
| One of Leo's divorced friends |
| Louise |
| Serena's mother |
| Mario |
| Character from Mario Bros. |
| Matty |
| Serena's brother |
| Milo |
| Melanie's dog |
| Rachel |
| Woman Leo had a brief hookup with. Aka: Riley |
| Robbie |
| Leo's colleague |
| Rodney |
| Office security |
| Silas |
| Office manager |
| Valerie |
| Graham's ex-wife |
| Vicky |
| Melanie's friend |
