Marianne Nichols
| Played by | Kelly Coffield Park |
| Name | Marianne Nichols |
| Status | Alive |
| Occupation | Police detective |
| Residence | New Rochelle, NY, USA |
| Appearance | “Many Happy Returns” |
Marianne Nichols is a detective in New Rochelle.
Carter met with her to find out more information about Peter Arndt. Nichols told her Peter owed money to a lot of dangerous people and gave Carter the accident report on Jessica's death.