The Supernatural pilot got its premiere on The WB.
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 (U.S. TV series) . The pilot was viewed by an estimated 5.69 million viewers , and the ratings of the first four episodes prompted The WB to pick up the series for a full season .