S06E09: Chapter One Hundred and Four: The Serpent Queen's Gambit

After suspecting that Percival is about to make a big play, Archie, Betty and Jughead warn their friends about his potential threat to the town. Meanwhile, Toni also finds herself a target after Percival announces his plans to rid the town of gangs, including the Serpents. Finally, Cheryl makes her move against Archie, Betty and Jughead.