Casting | Rôle |
|---|
| Sophia Whitehead | Self - Friend of Madison, Kaylee, Xana and Ethan |
| Ruby Simpson | Self - Friend of Madison, Kaylee, Xana and Ethan |
| Kaylee McConkey | Self - Friend of Madison, Kaylee, Xana and Ethan |
| Leah Sullivan | Self - Friend of Madison, Kaylee, Xana and Ethan |
| Howard Blum | Self - Author, When The Night Comes Falling |
| Jennifer Coffindaffer | Self - Retired FBI Special Agent |
| Angenette Levy | Self - Journalist |
| Haadiya Tariq | Self - Former University of Idaho Student Editor, The Argonaut |
| Joseph Scott Morgan | Self - Forensic Science Professor |
| Imran H. Ansari | Self - Defense Attorney |
| Jarrett Ferentino | Self - Homicide Prosecutor |
| Olivia Vitale | Self - Social Media Journalist |
| Steven Goncalves Jr. | Self - Kaylee's Brother |
| Scott Greene | Self - Senior Digital Forensics Examiner |
| Joseph Allen | Self - Doctor of Optometry |
| Greg Hampikian | Self - DNA Expert |
| Anonymous Student | Self - Student of Bryan Kohberger |
| Ashleigh Banfield | Self - Host, NewsNation (archive footage) |
| Hunter Chapin | Self - Ethan's Brother (archive footage) |
| Maizie Chapin | Self - Ethan's Sister (archive footage) |
| Stacy Chapin | Self - Ethan's Mother (archive footage) |
| Hunter Johnson | Self - Friend of Victims (archive footage) |
| Jazzmin Kernodle | Self - Xana's Sister (archive footage) |
| Karen Laramie | Self - Madison's Mother (archive footage) |
| Scott Laramie | Self - Madison's Step Father (archive footage) |
| Katherine Ramsland | Self - Serial Killer Expert & Former Teacher of Bryan Kohberger (archive footage) |
| Jake Schriger | Self - Madison's Boyfriend (archive footage) |
| Hayley Willette | Self - Bryan Kohberger's Tinder Date (archive footage) |
