Things You Didn't Know About 'Supernatural,' Including Drama Over a Spinoff & the Big Star who Auditioned to Play Sam

No matter how often you binge Supernatural, we bet that there is still so much that you don’t know about it. Premiering in 2005 and running for 15 seasons, the franchise centered on characters played by the likes of Jensen Ackles, Jared Padalecki and Misha Collins. Four years after the story came to a close,