'Riverdale' Introduces a New, Crazy, Bloody Mystery in the Season 3 Finale (RECAP)

Riverdale -- "Chapter Fifty-Seven: Survive the Night" -- Image Number: RVD322a_0292.jpg -- Pictured (L-R): KJ Apa as Archie, Lili Reinhart as Betty, Camila Mendes as Veronica and Cole Sprouse as Jughead -- Photo: Dean Buscher/The CW -- © 2019 The CW Network, LLC. All rights reserved.