<P> `` And in the End ... '' is the 331st and final episode of the American television series ER . The two - hour episode aired on April 2 , 2009 and was preceded by a one - hour retrospective special . </P>
<P> `` And in the End ... '' is the 331st and final episode of the American television series ER . The two - hour episode aired on April 2 , 2009 and was preceded by a one - hour retrospective special . </P>
what was the title of the last episode of er
what was the title of the last episode of er
`` And in the End ... ''
`` And in the End ... ''