ER/Season Thirteen

Season Thirteen
ER
Season Premiere	September 21, 2006
Season Finale	May 17, 2007
Episode Count	23
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Season Thirteen of ER premiered on September 21, 2006.

This season brings along a much hyped cast member, John Stamos as Tony Gates. Originally decided by NBC to be broken into two halves separated by The Black Donnellys, a momentary resurgence in ratings has caused NBC to not only decide to show reruns during the winter hiatus, but also to increase its episode count to 23, the first time since the first season that the show received an episode order higher than 22.

Episodes

#	#	Title			Airdate
269	1	Bloodline			September 21, 2006
270	2	Graduation Day			September 28, 2006
271	3	Somebody to Love			October 5, 2006
272	4	Parenthood			October 12, 2006
273	5	Ames v. Kovac			October 19, 2006
274	6	Heart of the Matter			November 2, 2006
275	7	Jigsaw			November 9, 2006
276	8	Reason to Believe			November 16, 2006
277	9	Scoop and Run			November 23, 2006
278	10	Tell Me No Secrets...			November 30, 2006
279	11	City of Mercy			December 7, 2006
280	12	Breach of Trust			January 4, 2007
281	13	A House Divided			January 11, 2007
282	14	Murmurs of the Heart			February 1, 2007
283	15	Dying Is Easy...			February 8, 2007
284	16	Crisis of Conscience			February 15, 2007
285	17	From Here to Paternity			February 22, 2007
286	18	Photographs and Memories			April 12, 2007
287	19	Family Business			April 19, 2007
288	20	Lights Out			April 26, 2007
289	21	I Don't			May 3, 2007
290	22	Sea Change			May 10, 2007
291	23	The Honeymoon Is Over			May 17, 2007