spn season finale

Supernatural season finale theory

Okay so what if in the season 10 finale ..Dean does kill Sam. But when he does kill Sam , the mark start to vanish . It makes sense because of what Cain said ..“ you are living my life in reverse ”

Cain killed Abel and then got the Mark of Cain.

Dean already has the Mark of Cain and kills Sam and the mark vanishes.

 

…but then what the hell would next season be about?!

Supernatural Spoilers - "Prepare for a Supernatural first and a major cliffhanger in the finale. ‘We leave our guys in a situation they’ve never faced before, which after nine seasons, it kind of narrows it down a little bit,’ supervising producer Andrew Dabb teases. 'I think once they see the last frame of the last episode, I think people are going to be incredibly excited for Season 10.’“ [x]

I can’t handle this