| Mrs. | Arness | Kyle's teacher. |
| Momma | Bear | Jessica's mother. |
| Kevin | Boyle | Marysue's fiancé. |
| Jessica | Cook | One of Penny's schoolmates. |
| Jessie | Cook | Christina's best friend. |
| Steve | Culbertson | The ME's investigator. |
| Valerie | Edgar | A detective who works in sex crimes. |
| Aaron | Fogelman | Christina's boyfriend. |
| Wynn | Fogelman | Aaron's father. |
| Julia | Gray | Penelope's mother. |
| Penelope | Gray | Britanny's friend. Missing. |
| Timothy | Gray | Penny's father. Aka: Tim. |
| Pooch | Halvorsen | Sonya's friend. A tattoo artist. |
| Kyle | Hatcher | One of Nikki's sons. |
| R.J | Hatcher | One of Nikki's sons. |
| Speed | Hatcher | Nikki's ex-husband. |
| Doc | Holiday | The serial killer. Aka: Gerald Fitzgerald. |
| Doug | Irwin | Dana's colleague. |
| Bob | Iverson | Penny's doctor. |
| Jamar | Jackson | A limo driver. |
| Jamar | JAckson | Liska's colleagues. |
| The 9th | Jane Doe | The dead body in a limo. Aka: Zombie Doe. |
| Ulrich | Kasselmann | The head of criminal investigative division. |
| Sam | Kovac | A homicide cop. |
| Britanny | Lawler | Kyle's schoolmate. |
| Nikki | Liska | Sam's partner. Aka: Tinks. |
| Ulf | Moller | Assistant chief medical examiner. |
| Carey | Moore | Kovac's ex-girlfriend. |
| Lucy | Moore | Carey's daughter. |
| Dana | Nolan | A news anchor. |
| Emily | Peters | One of Penny's schoolmates. |
| Nam | Pham | The forensic artist. |
| Sonya | Porter | Tippen's niece. A journalist. |
| John | Quinn | FBI's top profiler. |
| Maggie | Stone | Chief medical examiner. |
| Christina | Warner | A popular girl in Kyle's school. |
| Michael | Warner | Julia's fiancé. Christina's father. |
| Bobby | Zaytoun | A police officer. Marysue's brother. |
| Marysue | Zaytoun | Nikki's friend. |
| Renee | Zellweger | An actress. |
| Alex | | R.J.'s friend. |
| Brandi | | Tim's girlfriend. |
| Dickson | | The detective in Dana's case. |
| Moller | | The forensic pathologist. |
| Patrick | | A bar owner. |
| Rodgers | | The school principal. |
| Tippen | | One of Kovac's colleagues. |
| Ultor | | Kyle's book character. |
