As Bailey’s Comet passes over Rivervale, Cheryl and Nana Rose revisit the tragic stories of the Blossom women through the years. Meanwhile, the once-in-a-lifetime celestial event prompts Cheryl to summon a familiar face to Rivervale - Sabrina Spellman.
Riverdale Season Number: 6 Episode Number: 4 Episode Title: Chapter Ninety-Nine: The Witching Hour(s) Air Date: 2021-12-07