| 1 | Jodi |
Dillon | Protagonist |
| | Caroline |
Vallow | Girl having a party |
| | Paige |
Montgomery | Jodi's friend |
| | Lucy |
Reed | Jodi's friend |
| | Julian |
Hollister | Zack's best friend |
| | Zack |
Thrasher | Helvetia's new point guard; Jodi's best friend |
| | Matt |
| The guy Jodi met at the party |
| | Freeman |
| Algebra teacher |
| | Gigi |
Hadid | Fashion model |
| | Monica |
| Girl in red bikini |
| | Emily |
Mills | Girl in love with Zack; took her own life |
| 2 | Chelsea |
Harding | Lead detective on Emily's case |
| | Gregory |
Thrasher | Zack's father |
| | Cheryl |
Montgomery | Paige's mother |
| 3 | Patricia |
| Gregory's assistant |
| | Hank |
Dillon | Jodi's father |
| | Maureen |
Mills | Emily's mother |
| | Robert |
Mills | Emily's father |
| | Hannah |
Mills | Emily's sister |
| 4 | Peter |
Kim | Zack's tutor |
| | Katherine |
Thrasher | Zack's older sister |
| | Charity |
Thrasher | Gregory's wife; Zack's stepmother |
| 5 | Principal |
Robbins | The school principal |
| 6 | Nina |
Hollister | Julian's mother |
| | Ray |
Hollister | Julian's father |
| 7 | Miss |
Tamblen | Receptionist |
| | Mrs. |
Calloway | Drama teacher |
| | Doug |
| Production manager |
| | Oliver |
Burns | Jodi's theatre friend and neighbor |
| 8 | Ms. |
George | Jodi's new wellness counselor |
| | Mrs. |
Needlemeyer | Florence's previous counselor |
| | Mrs. |
Huberman | Teacher who found Jodi crying |
| 9 | Miranda |
Perez | Criminal defense lawyer |
| | Nikita |
| Jodi's theatre friend |
| | Reagan |
Matthews | One of their schoolmates |
| 10 |
Rosa | |
Jodi's mother |
| | Anna Maria |
| Jodi's grandmother |
| 11 |
Buechler | |
Assistant district attorney |
| | Henry |
Yang | Buechler's colleague |
| | Kacey |
Andrew | Girl who asked Zack to dance |
| 12 |
Kiera | |
Girl Zack was flirting with |
| | Charlie |
Shaw | Paige's boyfriend |
| | Spencer |
Gordon | Boy who asked Jodi to dance |
| | Mr. |
Burr | One of their teachers |
| 16 |
Bette | |
Paige's aunt |
| | Nan |
Herrington | Bette's medium friend |
| 18 |
Vanessa | Jones |
Girl who thought Jodi bullied her |
| 24 |
Herminia Josephina | Rodriguez |
Jodi's mother |
