If Supernatural ever returns for a sixteenth season, it would have to resurrect one of the show's most controversial trends.

Supernatural explored several themes throughout its 15-season run. However, multiple storylines ended up on the cutting room ...

Jensen Ackles as Dean Winchester and Jared Padalecki as Sam Winchester in the first season of 'Supernatural.' Image via The ...

Supernatural explored several themes throughout its 15-season run. However, multiple storylines ended up on the cutting room ...

Every season of Supernatural saw the characters grapple with intense changes and upheaval, with Sam and Dean occasionally ...

He tried to get out, but they pulled him back in! Sam Winchester, the demon-blooded, reluctant hunter, and 6'4'' tower of ...

Supernatural's boss reveals a scrapped Sam and Dean storyline that would have changed everything for the world.

Castiel may not have alwyas understood us humans, but we got to understand him - and these re the Supernatural episodes that helped us ...

Few TV shows can keep you hooked for 15 seasons straight, but Supernatural pulled it off with a mix of brotherly banter, terrifying monsters, and gut-punch emotional moments.