| Danny |
Ambrose | Ethan's classmate, Sheila's student |
| Leanne |
Armstrong | One of Sheila's students |
| Trevor |
Bakers | One of Morris's account managers |
| Linda |
Branson | Professor who replaced Sheila |
| Mr. |
Bristol | Ethan's former teacher |
| Mr. |
Chan | Morris's colleague |
| Bill |
Chancellor | Heart surgeon, Sheila's ex-husband |
| Marianne |
Chang | Sheila's old friend and therapist, Jerry's wife. Aka: Annie |
| Jeffery |
Deaver | Author of the book Morris reads |
| Dr. |
Easton | Sheila's co-teacher |
| Mr. |
Evers | Morris's colleague |
| Dennis |
Fisher | Leader of Sex Addicts Anonymous |
| Silver |
Fox | Man Sheila met at the bar |
| Morris |
Gardener | Sheila's fiancé |
| Randall |
Gardener | Morris's oldest son |
| Simon |
Hoffer | Ethan's neighbor |
| Elizabeth |
Hoffer | Simon's wife |
| Jerry |
Isaac | Private investigator |
| Kim |
Kellogg | Detective |
| Carmen |
Khang | Hotel's assistant director of catering and events |
| Valerie |
Kim | One of Sheila's other TAs |
| Donovan |
Langley | Diana's boyfriend |
| Katrina |
Lebert | Sheila's friend |
| Abby |
Maddox | Ethan's live-in girlfriend |
| Stancey |
Milgran | Yale psychologist |
| Melanie |
Rudder | One of the ladies in the administration office |
| Julia |
Shelby | Sheila's friend |
| Dean |
Simmons | The dean |
| Diana |
St. Clair | Swimmer, murdered |
| Caroline |
Stevens | One of the TAs |
| Sheila |
Tao | Protagonist, psychologist. Aka: Stella |
| Mike |
Torrance | Kellogg's partner |
| Brenda |
Walcott | Woman from human resources |
| Ethan |
Wolfe | Sheila's lover and student. Aka: Tom Young, James |
| Cheryl |
| James's ex-girlfriend |
| Christina |
| Sex Addicts Anonymous member |
| Curt |
| Sex Addicts Anonymous member |
| Darcy |
| One of Morris's associates |
| Donna |
| Randall's girlfriend |
| George |
| Ethan's foster father |
| Helen |
| Ethan's foster mother |
| Henry |
| Security guard |
| Jean |
| Waitress |
| Keisha |
| Jerry's niece and assistant |
| Kenneth |
| Sex Addicts Anonymous member |
| Kyle |
| Randall's friend in Seattle |
| Lenore |
| Morris's ex-wife, Randall's mother |
| Luke |
| Bartender |
| Marie |
| Prostitute, thief |
| Mark |
| One of Sheila's students |
| Marlon |
| Schizophrenic man |
| Mercury |
| Morris's goldfish |
| Michael |
| Boyfriend of Ethan's mother |
| Michelle |
| One of Sheila's students |
| Phillip |
| Lenore's new husband |
| Pietro |
| Italian tailor |
| Priya |
| One of Sheila's students |
| Sonny |
| One of Sheila's TAs |
| Stacey |
| Bank receptionist |
| Theresa |
| Morris's secretary |
