| LLaci PetersonSelf (archive footage) | Self (archive footage) |
| SScott PetersonSelf (archive footage) | Self (archive footage) |
| AAllen BrocchiniSelf - Detective, Modesto PD (CA) | Self - Detective, Modesto PD (CA) |
| SSharon RochaSelf - Laci's Mom | Self - Laci's Mom |
| LLori HeintzSelf - Laci's Friend | Self - Laci's Friend |
| SStacy BoyersSelf - Laci's Friend | Self - Laci's Friend |
| RRene TomlinsonSelf - Laci's Friend | Self - Laci's Friend |
| GGreg ReedSelf - Laci & Scott's Friend | Self - Laci & Scott's Friend |
| KKristen ReedSelf - Laci & Scott's Friend | Self - Laci & Scott's Friend |
| JJaney PetersonSelf - Scott's Sister-in-Law | Self - Scott's Sister-in-Law |
| SSusan CaudilloSelf - Scott's Sister | Self - Scott's Sister |
| HHeather AdamsSelf - Laci's Friend | Self - Laci's Friend |
| JJon BuehlerSelf - Detective, Modesto PD (CA) | Self - Detective, Modesto PD (CA) |
| TTed RowlandsSelf - Reporter, KTVU | Self - Reporter, KTVU |
| GGloria GomezSelf - Reporter, KOVR, Sacramento, CA | Self - Reporter, KOVR, Sacramento, CA |
| RRoy W. WasdenSelf - Modesto Chief of Police (archive footage) | Self - Modesto Chief of Police (archive footage) |
| SSharon HaganSelf - Special Agent Supervisor, Violent Criminal Profiling Unit, Dept of Justice, Sacramento, CA | Self - Special Agent Supervisor, Violent Criminal Profiling Unit, Dept of Justice, Sacramento, CA |
| CCraig GroganSelf - Detective, Modesto PD (CA) (archive footage) | Self - Detective, Modesto PD (CA) (archive footage) |
| LLee PetersonSelf - Scott's Father (archive footage) | Self - Scott's Father (archive footage) |
| BBrent RochaSelf - Laci's Brother (archive footage) | Self - Laci's Brother (archive footage) |
