The Supernatural pilot was written by American screenwriter Eric Kripke.
Eric Kripke ( born April 24 , 1974 ) is an American television writer , director , and producer . Pilot (Supernatural) . It premiered on The WB on September 13 , 2005 , and was written by series creator Eric Kripke and directed by David Nutter . Supernatural is an American fantasy horror television series created by Eric Kripke .