ER season 15

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ER
Season 15
DVD cover
Starring	Parminder Nagra John Stamos Linda Cardellini Scott Grimes David Lyons Angela Bassett
No. of episodes	22
Release
Original network	NBC
Original release	September 25, 2008 (2008-09-25) – April 2, 2009 (2009-04-02)
Season chronology
← Previous Season 14
List of episodes

The fifteenth and final season of the American fictional drama television series ER premiered on September 25, 2008, and concluded on April 2, 2009, in a two-hour episode preceded by a one-hour retrospective special. It consists of 22 episodes. Because actors Mekhi Phifer, Goran Visnjic, and Maura Tierney had been told the 14th season would be the last one, they had no plans or interest in returning for S15. The producers agreed to film two S15 episodes at the very end of the Season 14 production cycle so that all three actors could finish their time on the show and move on to other projects. Tierney would make a one-scene guest appearance in an episode near the end of Season 15.