| A group of teen girls from different backgrounds must fight for survival after a plane crash strands them on a deserted island. The castaways both clash and bond as they learn more about each other, the secrets they keep, and the traumas they've all endured. But there’s just one twist… these girls did not end up on this island by accident. |
| Name | Character | Episodes |
|---|---|---|
| Rachel Griffiths | Gretchen Klein | 18 |
| Sophia Ali | Fatin Jadmani | 18 |
| David Sullivan | Daniel Faber | 18 |
| Troy Winbush | Dean Young | 18 |
| Sarah Pidgeon | Leah Rilke | 18 |
| Shannon Berry | Dot Campbell | 18 |
| Reign Edwards | Rachel Reid | 18 |
| Erana James | Toni Shalifoe | 18 |
| Helena Howard | Nora Reid | 18 |
| Joe Witkowski | Thom | 10 |
| Nicholas Coombe | Josh Herbert | 8 |
| Reed Shannon | Scotty Simms | 8 |
| Alex Fitzalan | Seth Novak | 8 |
| Miles Gutierrez-Riley | Ivan Taylor | 8 |
| Barbara Eve Harris | Audrey | 5 |
| Greg Bryk | Tim Campbell | 3 |
| Ben Folds | Ben Folds | 3 |
| Tandi Wright | Maryann Rilke | 3 |
| Richard Knowles | Kurt Rilke | 3 |
| Alison Bruce | Ellen Rose | 2 |
| Shane Callahan | James Reid | 2 |
| Mark Mitchinson | Leonard Whitney | 2 |
| Dionne Gipson | Angela Reid | 2 |
| James Fraser | Ian Murnen | 2 |
| Lucas Linehan | CPB Officer | 1 |
| Poorna Jagannathan | Rana Jadmani | 1 |
| Stefania LaVie Owen | Becca Gilroy | 1 |
| Adriana DeGirolami | Inés | 1 |
| Jen Van Epps | Researcher | 1 |
| Victoria Moroles | Marisol Núñez | 1 |
| Warren Kole | Dave Goodkind | 1 |
| Bella Shepard | Regan | 1 |
| Lewis Fitz-Gerald | Ted Wolchak | 1 |
| J.R. Cacia | Raúl Núñez | 1 |
| Rowena King | Alice | 1 |
| Johnny Berchtold | Quinn Miller | 1 |
| Gabriel Sloyer | Elías García | 1 |
| John Leigh | Social Worker | 1 |
| Asher Yasbincek | Julia | 1 |
| Ian Stenlake | James Reid | 1 |
| Jacque Drew | Assistant District Attorney | 1 |
| Kimberly Guerrero | Bernice Blackburn | 1 |
| Bonnie Soper | Jobeth Goodkind | 1 |
| Jennifer Patino | Adriana | 1 |