As the second half of Season 4 was halted from production due to the writers' strike in America, the final 10 episodes have been pushed back to January 16, 2009.[1] The series finale will air on March 20, 2009.[2] Moore has stated that the final episodes of the series are going to vary in size with the final three possibly constituting a series finale up to 4 hours in length.
| Prod. # | Series # | Title | Directed by | Written by | First aired (UK) | First aired (US) | Survivor Count |
|---|---|---|---|---|---|---|---|
| 413 | 66 | Sometimes a Great Notion[3] | — | — | — | January 16, 2009 | — |
| This episode has not aired yet. | |||||||
| 414 | 67 | A Disquiet That Follows My Soul[4] | — | — | — | January 23, 2009 | — |
| This episode has not aired yet. | |||||||
| 415 | 68 | The Oath | — | — | — | January 30, 2009 | — |
| This episode has not aired yet. | |||||||
| 416 | 69 | Blood on the Scales | — | — | — | February 6, 2009 | — |
| This episode has not aired yet. | |||||||
| 417 | 70 | No Exit | — | — | — | February 13, 2009 | — |
| This episode has not aired yet. | |||||||
| 418 | 71 | Deadlock | — | — | — | February 20, 2009 | — |
| This episode has not aired yet. | |||||||
| 419 | 72 | Someone to Watch Over Me | — | — | — | February 27, 2009 | — |
| This episode has not aired yet. | |||||||
| 420 | 73 | — | — | — | — | March 6, 2009 | — |
| This episode has not aired yet. | |||||||
| 421 | 74 | — | — | — | — | March 13, 2009 | — |
| This episode has not aired yet. | |||||||
| 422 | 75 | — | — | — | — | March 20, 2009 | — |
| This episode has not aired yet. | |||||||