If Riverdale decides to take a leaf out of its comic book, then that death could be Jughead’s dog, Hot Dog.
It seems unlikely that FP is the killer, but it’s certainly possible he knows who did it.
As for Archie, it’s kind of understandable that his mom wants him to move to Chicago, though we know he won’t actually go; there’s a Riverdale season 2, after all.
Still hurt by the betrayal of his friends and torn over who to trust, Jughead (Cole Sprouse) reluctantly joins them in a quest for truth.