| Karen |
Adler | Friend of Lydia |
| Vivian |
Allen | Marilyn's neighbor |
| Ginny |
Barron | Missing and dead |
| Shelley |
Brierley | Old friend of Lydia |
| Andrew |
Bynner | Nath's host student Harvard |
| Shirley |
Byron | Girl embarrassed James in school |
| Professor |
Carlson | Head of the History department |
| Louisa |
Chen | James' teaching assistant |
| Mr. |
Childs | Gym teacher James' high school |
| Officer |
Fiske | Police examining Lydia's room |
| Miles |
Fuller | Nath's classmate |
| Stanley |
Hewitt | Professor |
| Donald |
Kelly | Physics teacher |
| Mr. |
Landis | Shop teacher |
| Tom |
Lawson | Professor Chemistry Dept. |
| Lydia Elizabeth |
Lee | 5/3/77 Missing 10th grade |
| Marilyn |
Lee | Lydia's mother |
| Nathan |
Lee | Lydia's brother |
| Hannah |
Lee | Lydia's sister |
| James |
Lee | Lydia's father |
| Jenn |
Pittman | Old friend of Lydia |
| Tommy |
Reed | Classmate of Nath |
| Mr. |
Rexford | Nath's science teacher |
| Pam |
Saunders | Old friend of Lydia |
| Stacey |
Sherwin | Princess of kindergarten with Lydia |
| Mr. |
Tolliver | Principal of the high school |
| Doris |
Walker | Marilyn Lee's mother, and teacher |
| Jack |
Wolff | Friend of Lydia, is fatherless |
| Dottie |
| School secretary |
| Andy |
| Nath's host student at Harvard |
| Wes |
| Andy's roommate |
| Henry |
| Fake name for James' dad |
| Wendy |
| Fake name for James' mom |
| Myrna |
| Dept. secretary James Lee |