In Riverdale Season 4 Ep. 10: Varsity Blues, as Riverdale High prepares for the championship football game against Stonewall Prep, Betty (Lili Reinhart) gets to work on a story about the rivalry between the schools. Archie (KJ Apa) is conflicted when Mary (guest star Molly Ringwald) tells him about Uncle Frank’s (guest star Ryan Robbins)