Elsewhere, Mary (guest star Molly Ringwald) arrives in Riverdale just as tensions between Fred (Luke Perry) and Archie (KJ Apa) reach a breaking point.
Finally, Toni (guest star Vanessa Morgan), Veronica (Camila Mendes) and Josie (Ashleigh Murray) team up to solve a strange mystery involving Cheryl (Madelaine Petsch).
Archie (KJ Apa) steps up to help after learning that Hiram’s (Mark Consuelos) mobster associates have come to Riverdale to stir up some trouble.
KJ Apa stars as Archie Andrews in the series along with Lili Reinhart as Betty Cooper, Camila Mendes as Veronica Lodge, Ashleigh Murray as Josie McCoy, Cole Sprouse as Jughead Jones and Madelaine Petsch as Cheryl Blossom.