| | | | Part One |
| | Lance Nicholas | Dunne | Amy's husband. Aka: Nick. |
| | Amy | Elliot-Dunne | Nick's wife. Missing. |
| | Margo | Dunne | Nick's twin sister. Aka: Go. |
| | Carmen | | Amy's new friend. |
| | Gary | | Margo's tree. |
| | McMann | | A bar owner. |
| | Carl | Pelley | Nick and Amy's neighbor. |
| | Rand | Elliot | Amy's father. A psychologist. |
| | Marybeth | Elliot | Amy's mother. |
| | Andy | | Amy's fiancé in her book. |
| | Velasquez | | A police officer. |
| | Riordan | | Velasquez partner. |
| | Rhonda | Boney | The lead detective on Amy's missing case. |
| | Jim | Gilpin | Boney's partner. |
| | Campbell | | Amy's friend. |
| | Insley | | Amy's friend. |
| | George | | Amy's friend. |
| | John | | Amy's friend. |
| | Jack | | Nick's friend. |
| | Jennifer | | Jack's wife. |
| | Jan | Teverer | Nick and Amy's neighbor. |
| | Mike | | Nick and Amy's neighbor. |
| | Taylor | | One of Mike's daughters. |
| | Talullah | | One of Mike's daughters. |
| | Topher | | Mike's son. |
| | Geraldine | Ferraro | A vice presidential candidate in 1984. |
| | Ellen | Abbott-Live | Specialized in missing and murdered women. |
| | Hannah | | Nick's alleged side chick. |
| | Brian | | Amy's friend in Amazing Amy. |
| | Suzy | | Brian's friend. Amazing Amy's sidekick. |
| | Joanna | | Amy's archrival in the Amazing Amy book. |
| | Judith | Viorst | A character in Amazing Amy. |
| | Hilary | Handy | The girl who was obsessed with the Amazing Amy book. |
| | Desi | Collings | Amy's ex-boyfriend who became obsessed with her. |
| | Stucks | Buckley | Nick's old friend. |
| | Shawna | Kelly | The frito-pie baker. |
| | Mr. | Coleman | Nick's former teacher. |
| | Joe | Hillsam | Mikey's brother. |
| | Mikey | Hillsam | Joe's brother. The town's badass. |
| | Lonnie | | Drug and illegal firearms dealer. |
| | Maureen | Dunne | Nick's mother. Aka: Mo. |
| | Vicky | | Maureen's best friend. |
| | Bill | Dunne | Nick's father. |
| | Noelle | Hawthorne | Amy's best friend. |
| | Andie | | Nick's mistress. |
| | Mary | | One of Amy's friends. |
| | Blecker | | Amy's cat. |
| | Jacqueline | Collings | Desi's mother. |
| | David | Samson | One of Amy's ex-boyfriends. |
| | Murphy | Clark | One of Amy's ex-boyfriends. |
| | Tanner | Bolt | Nick's lawyer. Aka: Hubby Hawk, Dickhead Defender. |
| | Cody | Olsen | Tanner's former client. |
| | | | Part Two |
| | Dorothy | | The Walmart manager. |
| | Jeff | | Amy's new boyfriend. |
| | Madeleine | | Andie's friend. |
| | Greta | | The girl that Amy met. |
| | Campbell | McIntosh | Amy's childhood friend. |
| | Rebecca | | The girl who wanted to interview Nick. |
| | Sharon | Schieber | A reporter. |
| | Betsy | Bolt | Tanner's wife. |
| | Custer | | A police officer. |
