Premise: Supernatural (U.S. TV series) . The fifth season concluded the series ' main storyline , and Kripke departed the series as showrunner . The fifth season of Supernatural , an American fantasy horror television series created by Eric Kripke , premiered September 10 , 2009 , and concluded on May 13 , 2010 , on The CW .
Hypothesis: Supernatural is a documentary series.
Label: CONTRADICTION