| Season 15 | |
 | |
| No. of episodes | 22 |
| Original network | NBC |
| Original run | September 25, 2008 – April 2, 2009 |
| DVD release | July 12, 2011 |
| Season chronology | |
| Previous 14 |
Next N/A (Finale) |
The fifteenth and final season of the medical drama series ER which originally aired from NBC on September 25, 2008 and concluded on April 2, 2009. The season consists of 22 episodes.
Cast and characters
- Main article: Season fifteen characters
- See also: Season fifteen cast
| Actor/actress | Character | Role |
|---|---|---|
| Goran Višnjić | Dr. Luka Kovac | Ex-Chief of Emergency Medicine |
| Maura Tierney | Dr. Abby Lockhart | Emergency Medicine Attending |
| Mekhi Phifer | Dr. Greg Pratt | Emergency Medicine Attending |
| Scott Grimes | Dr. Archie Morris | Emergency Medicine Attending |
| Parminder Nagra | Dr. Neela Rasgotra | Surgical Resident (Year 3) |
| John Stamos | Dr. Tony Gates | Emergency Medicine Resident (Year 2) |
| Linda Cardellini | Nurse Samantha "Sam" Taggart | ER Nurse |
| David Lyons | Dr. Simon Brenner | Emergency Medicine Attending |
| Angela Bassett | Dr. Catherine Banfield | Chief of Emergency Medicine |
Plot synopsis
Episodes
- Main article: Episodes
| Season # | Series # | Title | Writer | Director | Original airdate |
|---|---|---|---|---|---|
| 1 | 310 | Life After Death | Joe Sachs | Christopher Misiano | September 25, 2008 |
| 2 | 311 | Another Thursday at County | Lisa Zwerling | Paul McCrane | October 9, 2008 |
| 3 | 312 | The Book of Abby | David Zabel and Lisa Zwerling | Christopher Chulack | October 16, 2008 |
| 4 | 313 | Parental Guidance | Janine Sherman Barrois | John E. Gallagher | October 23, 2008 |
| 5 | 314 | Haunted | Karen Maser | Christopher Chulack | October 30, 2008 |
| 6 | 315 | Oh, Brother | Virgil Williams | Stephen Cragg | November 6, 2008 |
| 7 | 316 | Heal Thyself | David Zabel | David Zabel | November 13, 2008 |
| 8 | 317 | Age of Innocence | Janine Sherman Barois | Paul McCrane | November 20, 2008 |
| 9 | 318 | Let it Snow | Joe Sachs | Charles Haid | December 4, 2008 |
| 10 | 319 | The High Holiday | Shannon Goss | Lesli Linka Glatter | December 11, 2008 |
| 11 | 320 | Separation Anxiety | Virgil Williams | Terence Nightingall | January 8, 2009 |
| 12 | 321 | Dream Runner | Lisa Zwerling | Andrew Bernstein | January 15, 2009 |
| 13 | 322 | Love Is a Battlefield | Karen Maser | Richard Thorpe | January 22, 2009 |
| 14 | 323 | A Long, Strange Trip | Joe Sachs | Mimi Leder | February 5, 2009 |
| 15 | 324 | The Family Man | Andrew Fash | Eriq La Salle | February 12, 2009 |
| 16 | 325 | The Beginning of the End | David Zabel and Lisa Zwerling | Jonathan Kaplan | February 19, 2009 |
| 17 | 326 | T-Minus-6 | David Zabel and Lisa Zwerling | Rod Holcomb | February 26, 2009 |
| 18 | 327 | What We Do | David Zabel | David Zabel | March 5, 2009 |
| 19 | 328 | Old Times | John Wells | John Wells | March 12, 2009 |
| 20 | 329 | Shifting Equilibrium | Lisa Zwerling | Andrew Bernstein | March 19, 2009 |
| 21 | 330 | I Feel Good | Joe Sachs | Stephen Cragg | March 26, 2009 |
| 22 | 331 | And in the End... | John Wells | Rod Holcomb | April 2, 2009 |
