As Halloween descends on Sin City, the CSIs investigate when a creepy mannequin prop inside a popular haunted house turns out to be a real dead body. Also, Catherine enlists the help of Folsom to search for her friend who disappeared.
| Name | Type | Role | |
|---|---|---|---|
| Craig S. O'Neill | Writer | ||
| Tom Parker | Guest Star | Lue Jasper | |
| Aviva Brandes | Guest Star | Stagehand | |
| Sue Zen Chew | Guest Star | Grace Huang | |
| Elise Marie Dubois | Guest Star | Chainsaw Woman | |
| Alessandro Garcia | Guest Star | Paul Reese | |
| Akilah Hotep | Guest Star | Supervisor | |
| D.C. Douglas | Guest Star | Rob Carter | |
| Christopher Gerse | Guest Star | Handcuffed Man | |
| Denzel Johnson | Guest Star | Detective Eric Donovan | |
| Tony Winters | Guest Star | Frank | |
| Sara Amini | Guest Star | Sonya Nikolayevich | |
| Francesca Ling | Guest Star | Elena Tran | |
| Alejandro De Anda | Guest Star | Emo Brat 2 | |
| Brian Yang | Guest Star | Daniel Alonso | |
| Joel Johnstone | Guest Star | Jack Nikolayevich | |
| Daniel di Tomasso | Guest Star | Trey | |
| Ariana Raygoza | Guest Star | Emo Brat 1 | |
| Sherri Saum | Guest Star | Jodi Wallach | |
| J.P. Manoux | Guest Star | Gene Farrow | |
| Sam Hill | Director |