| | | | Lower Manhattan |
| | Victoria | Ford | Cameron Young's suspected killer. |
| | Roman | Manchester | Victoria's defense attorney. |
| | Natalie | Ratcliff | Victoria's best friend. A novelist. |
| | | | Manhattan , New York |
| | Greg | Norton | A medical examiner. |
| | Arthur | Trudeau | The head of Forensic Biology. |
| | | | Part 1 |
| 1 | Avery | Mason | Protagonist. A TV news anchor. AKA: Claire Avery Montgomery. |
| | Mack | Carter | A TV news anchor. Deceased. |
| 2 | Christine | Samson | Avery's executive producer. |
| 3 | Mosley | Germaine | The head of HAP News. |
| | David | Hillary | The owner of HAP Media. |
| 4 | Katelyn | Carson | Avery's co-host. |
| | Dwight | Corey | Avery's agent. |
| 6 | Walt | Jenkins | A former FBI agent. Detective-in-charge in Cameron Young's case. |
| | Bureau | | Walt's dog. |
| 7 | Christopher | Montgomery | Avery's brother. |
| 8 | Connie | Clarkson | The school of sailing owner. Avery's mentor. |
| 9 | Eleanor | Marshfield | The trauma surgeon. |
| | Scott | Sherwood | Walt's former staff chief. |
| | Meghan | Cobb | The woman Walt falls in love with. Jason's wife. |
| 10 | Garth | Montgomery | Avery's father. A ponzi scheme leader. |
| 12 | Livia | Cutty | The medical consultant of HAP News. |
| | Jason | Snyder | Walt's partner. |
| 14 | James | Oliver | Walt's friend and former boss. |
| | Cameron | Young | A wealthy novelist. Deceased. |
| | | | Part 2 |
| 15 | Emma | Kind | Victoria's sister. |
| 16 | Dale | Richards | Walt's chief. |
| | Tessa | Young | Cameron's wife. |
| | Jasper | Ford | Victoria's husband. Cameron's realtor and friend. |
| 17 | Jarrod | Lockard | The medical examiner on Cameron's body. |
| | Ken | Schuster | The lead crime scene technician on Cameron's case. |
| | | | Part 3 |
| 25 | Andre | Schwarzkopf | A passport fraudster. Avery's contact. |
| 27 | Kenny | Arnett | The CEO of Hemingway Publishing. |
| | Diane | Goldstein | Natalie's editor. |
| | Don | Ratcliff | Natalie's husband. |
| | Peg | Perugo | The protagonist in Natalie's books. |
| 28 | Maggie | Greenwald | The district attorney. |
| | | | Part 5 |
| 63 | Marcus | Harris | The judge. |
| | Sullivan | | An FBI agent. |
| 65 | Annabelle | Gray | The Cabin owner. Garth's sister-in-law. |
| 71 | Jerome | | Garth's driver. |
