Okay, so I think it's a big possibility that we'll see Spencer leave the BAU at the end of the series because the amount of stuff he's gone through because of his job is insane and I think it would be nice to see him pursue a career as a professor because he seems to really like teaching his students whenever he does his classes.
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Criminal Minds Theories
RandomThese are just some things I think of that could happen on the show, feel free to comment and give me your opinions on the theories :) P.S. these are mostly going to be about Spencer