RIVERDALE
CW, 9:00 p.m. ET
This new treatment of the Archie comics universe really goes in a different direction this week, in an episode about Internet bullying and the “shaming” of several Riverdale high school girls. One of them, new Riverdale arrival Veronica (Camila Mendes), becomes an angry activist. Another student, Betty (Lili Reinhart), just becomes angry. In fact, blonde Betty channels the spirit of her late sister Polly, and goes brunette, sexy, and very, very vengeful (pictured).