| Year | Title | Role | Notes |
| 1996 | Dead Man's Walk | Maggie | TV miniseries |
| 1996 | Spin City | Gwen | "Pride and Prejudice" |
| 1996 | Calm at Sunset, Calm at Dawn | Emily | TV film |
| 2000 | Picnic | Madge Owens | TV film |
| 2002 | The Magnificent Ambersons | Lucy Morgan | TV film |
| 2002 | Girls Club | Lynne Camden | Main role |
| 2002 | Freshening Up | Janelle | TV short |
| 2007 | The Valley of Light | Eleanor | TV film |
| 2008 | The Memory Keeper's Daughter | Norah Henry | TV film |
| 2008–2009 | Life on Mars | Annie Norris | Main role |
| 2010–2014 | Boardwalk Empire | Gillian Darmody | Recurring role (season 1); 9 episodes Main Role (season 2–5); 30 episodes |
| 2015 | Mozart in the Jungle | Nina | Recurring role |
| 2016 | Chance | Jaclyn Blackstone | Main role |
| 2018 | Nightflyers | Dr. Agatha Matheson | Main role |
| 2018 | Seven Seconds | Sam Hennessy | Recurring Role |