<P> The fourth season of Supernatural , an American fantasy horror television series created by Eric Kripke , premiered September 18 , 2008 , and concluded on May 14 , 2009 , on The CW . </P>
<P> The fourth season of Supernatural , an American fantasy horror television series created by Eric Kripke , premiered September 18 , 2008 , and concluded on May 14 , 2009 , on The CW . </P>
when did season 4 of supernatural come out
when did season 4 of supernatural come out
September 18 , 2008
September 18 , 2008