| Jon |
Block | Scott's gym friend |
| Jean |
Brewster | Owner of Cathy's house |
| Barbara |
Buckley | Lisa's mother. Aka: Barb |
| Austin |
Byrd | Channel Five news anchor |
| Noa Helen |
Crowder | Son of Aimee and Scott |
| Scott |
Crowder | Aimee's husband |
| Arlette |
Fagin | Secretary at Mad River Regional High School |
| Jen |
Finch | Mother of Michael/Scott |
| Michael |
Finch | Missing person |
| Eileen |
Fisher | American fashion designer |
| Lisa |
Greco-King | Aimee's best friend |
| Michelle |
J. | Neighbor |
| Anton |
Khoury | Gwen's husband |
| George |
Khoury | Son of Gwen and Anton; Rafi's twin brother |
| Gwen |
Khoury | Aimee's friend |
| Henri |
Khoury | Anton's father |
| Rafi |
Khoury | Son of Gwen and Anton |
| Dexter |
Kohl | Missing person |
| Ray |
McCready | Michael/Scott's stepfather |
| Dave |
Muhlbaum | Liz's husband |
| Liz |
Muhlbaum | Neighbor |
| Katie |
O'Brien | Gwen's neighbor |
| Tim |
Romero | Scott's assistant |
| Jay |
Salazar | Detective in charge of Anton's case |
| Aimee |
Stern | Protagonist |
| Cathy |
Stocker | Aimee's client; schoolteacher |
| Aunt Kay |
| Scott's aunt |
| Benji |
| Son of Aimee and Scott |
| Bethesda |
| Noa's friend |
| Deb |
| Aimee's stepmother |
| Gabby |
| Manages the school's PTA listserv |
| Jason |
| Scott's friend |
| Kai |
| Son of Lisa and Marcus |
| Kenny |
| Mailman |
| Lance |
| Nova's co-worker |
| Marcus |
| Lisa's husband |
| Max |
| Son of Aimee and Scott; Benji's twin brother |
| Miles |
| Noa's friend |
| Nova |
| Coffee shop server |
| Paola |
| Gwen's Argentinian neighbor |
| Ruth |
| Aimee's roommate |
| Sababa |
| Gwen's dog |
| Tony |
| Unfaithful writer |
| Zelda |
| Jean's cat |
