High Quality Content by WIKIPEDIA articles! "Fresh Blood" is the seventh episode of the paranormal drama Supernatural`s third season on The CW, and is the show`s fifty-first episode overall. The episode was written by Sera Gamble and directed by Kim Manners; it was first broadcast on November 15, 2007. The narrative follows the series` protagonists Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) as they have their final confrontation with hunter Gordon Walker (Sterling K. Brown), who has been turned into a vampire.