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Season 15
Season fifteen
No. of episodes 22
Original network NBC
Original run September 25, 2008 – April 2, 2009
DVD release July 12, 2011
Season chronology
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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. The cover memorializes many of the past and present physicians and nurses who have dedicated their lives to serving the overburdened ER at County General Hospital.

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[]

The final season opens up revealing Gregory Pratt is the victim of the ambulance explosion. Despite the rallying efforts of his workplace colleagues, he succumbs to his injuries and dies. The season introduces Cate Banfield as new ER chief, a woman with a seemingly mysterious past with County General. Luka Kovač and Abby Lockhart leave for a new life in Boston, Brenner must deal with issues surrounding his childhood, and he comes to a crossroads in his relationship with Neela, Samantha Taggart and Tony Gates' relationship suffers a major setback after an accident involving Alex Taggart while Neela Rasgotra is forced to make some tough decisions, both personal and professional.

To mark the end of the series after 15 years, several former cast members make a return to the show. Mark Greene and Robert Romano appear in a flashback episode that explores Banfield's history with County General while John Carter returns to work at County although, unbeknown to his colleagues, he is in desperate need of a kidney transplant. Peter Benton, Doug Ross, Carol Hathaway, Susan Lewis, Elizabeth Corday, Kerry Weaver and Ray Barnett return in various episodes. The heartbreaking series finale ends with one final multiple casualty incident that brings multiple patients to the ER, and shows that life goes on at County General Hospital.

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
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