| 1 | Lydia Elizabeth |
Lee | 5/3/77 Missing 10th grade |
| | Marilyn |
Lee | Lydia's mother |
| | Nathan |
Lee | Lydia's brother |
| | Hannah |
Lee | Lydia's sister |
| | Dottie |
| School secretary |
| | Donald |
Kelly | Physics teacher |
| | Ginny |
Barron | Missing and dead |
| | James |
Lee | Lydia's father |
| | Louisa |
Chen | James' teaching assistant |
| | Stanley |
Hewitt | Professor |
| | Officer |
Fiske | Police examining Lydia's room |
| | Pam |
Saunders | Old friend of Lydia |
| | Jenn |
Pittman | Old friend of Lydia |
| | Shelley |
Brierley | Old friend of Lydia |
| | Jack |
Wolff | Friend of Lydia, is fatherless |
| | Karen |
Adler | Friend of Lydia |
| | Andy |
| Nath's host student at Harvard |
| | Wes |
| Andy's roommate |
| 2 | Doris |
Walker | Marilyn Lee's mother, and teacher |
| | Mr. |
Tolliver | Principal of the high school |
| | Mr. |
Landis | Shop teacher |
| | Henry |
| Fake name for James' dad |
| | Wendy |
| Fake name for James' mom |
| | Shirley |
Byron | Girl embarrassed James in school |
| | Professor |
Carlson | Head of the History department |
| 3 | Tommy |
Reed | Classmate of Nath |
| | Mr. |
Rexford | Nath's science teacher |
| | Miles |
Fuller | Nath's classmate |
| | Myrna |
| Dept. secretary James Lee |
| 4 | Vivian |
Allen | Marilyn's neighbor |
| | Tom |
Lawson | Professor Chemistry Dept. |
| | Mr. |
Childs | Gym teacher James' high school |
| 7 | Stacey |
Sherwin | Princess of kindergarten with Lydia |
| 11 |
Andrew | Bynner |
Nath's host student Harvard |