| | | | Book 1 |
| | Barry | Sutton | The NYPD Detective. Protagonist. |
| | Ann Voss | Peters | The girl that Barry failed to stopped the suicide of. |
| | | | FMS - False Memory Syndrome. |
| | Sam | Behrman | Ann's son in her false memory. |
| | Joe | Behrman | Ann's husband in her false memory. |
| | Franny | Behrman | Joe's wife. |
| | Helena | Gray-Smith | The lead scientist who built the memory chair. Barry's ex-lover. |
| | Jee-woon | Chercover | Helena's colleague. |
| | Julia | | Barry's former wife. |
| | Anthony | | Julia's new husband. |
| | Meghan | Sutton | Barry's daughter. Deceased. |
| | Gwendoline | Archer | Barry's friend. Leader of the Hercules Team. |
| | | | Hercules - A counterterrorism swat unit in NYPD's emergency service unit. |
| | Nelson | Mandela | Former President of South Africa. |
| | Marcus | Slade | The owner of the high technology company. Helena's boss. |
| | John | Poole | The chief of police. |
| | DeCarlo | | Barry's co-police. |
| | | | MEG - Magnetoencephalography. |
| | Dorothy | Smith | Helena's mother. |
| | Sergei | | Helena's ex-lover. One of Slade's scientists. |
| | Rajesh | Anand | Slade's software engineer. |
| | John | | Helena's colleague. |
| | Rachel | | Helena's colleague. |
| | Lenore | | One of Slade's imaging technicians. |
| | Tonya | | The bartender. |
| | Vince | | Barry's captor. |
| | Dr. Paul | Wilson | Slade's project manager for the medical team. |
| | Reed | King | The test subject. |
| | Dana | | Dr. Wilson's assistant. |
| | Mindy | | Meghan's lab partner. |
| | Jacob | | Meghan's friend. |
| | Kevin | | Meghan's friend. |
| | Sarah | | Meghan's friend. |
| | | | Book 2 |
| | Jon | Jordan | The new test subject. |
| | Michael | Dillman | One of the test subjects. |
| | Nancy | Smith | Helena's older daughter. |
| | Joseph | Hart | Meghan's crush. The Chef. |
| | Amor | Towels | The renowned architect of the big bend. |
| | Mclachlan | | Owner of a restaurant. |
| | | | Book 3 |
| | Carla | | The bartender. |
| | | | Book 4 |
| | Alonzo | | Helena's captor. |
| | Jessica | | Helena's captor. |
| | | | DARPA - The Defense Advanced Research Projects Agency. |
| | John | Shaw | The person in-charge at DARPA. |
| | Timoney | Rodriguez | The test subject at DARPA. A soldier. |
| | Steve | Crowder | Navy Seal. The test subject at DARPA. |
| | Albert | Kinney | The RAND systems theorist. |
| | Alan | Turing | The father of computer and artificial
intelligence. |
| | Daisy | Robinson | The girl that Steve murdered. |
| | Glenn | Greenwald | The news publisher. |
| | Peter | Jennings | The news reporter. |
| | | | Book 5 |
| | Sheila | Redling | The homicide detective. |
