Shipka, who played Sabrina Spellman on the canceled Netflix Riverdale spinoff will reprise her role for The CW drama in the biggest crossover event between the two shows. "We've been talking about having Sabrina visit Riverdale since Season 1, so it's thrilling that this is finally happening, as part of our Rivervale special event," says Riverdale creator Roberto Aguirre-Sacasa. "It's also perfect that she shows up to help Cheryl Blossom during her hour of greatest need. Everyone on set lost their minds — I think fans will, too. It's really fun and special."