The Winchesters season 1 finale reveals that the spinoff takes place in a different universe from its parent show Supernatural, leaving endless possibilities for returning characters to appear in The Winchesters season 2. By setting the spinoff in a separate universe, The Winchesters can resurrect dead characters or bring them back in new forms, as well as giving them happier endings than they had in Supernatural's canon. This multiverse gimmick expands the Supernatural universe and adds extra nostalgia to the series, but ultimately depends on The CW renewing the show for a second season.
