Do The Riverdale Parents Know Who Killed Jason Blossom?

YH hits up Paleyfest as it honors The CW's "Riverdale", and we chat with the stars in attendance, including Luke Perry, Marisol Nichols, and Mädchen Amick, to get their thoughts on the identity of Jason Blossom's killer, plus we find out how familiar they are with their co-stars' social media habits!