Last time on Riverdale: Hiram was all up in the Kool-aid and curious as to who bought red when he specifically only drinks green.  Veronica (Camila Mendes)  tries to pay it forward by helping Ethel Muggs (Shannon Purser)… sigh, I’m sure that storyline won’t be tiring.  And Polly Cooper (Tiera Skovby) is an idiot, but