Cheryl enlists the help of Archie, Kevin, Fangs and Reggie after she learns there is palladium underneath her maple groves. Meanwhile, Betty and Alice confront a trucker who may have been involved in Polly's disappearance. Elsewhere, Jughead and Archie each confront events from their past.
Elenco: K.J. Apa , Lili Reinhart , Camila Mendes , Cole Sprouse , Madelaine Petsch , Mädchen Amick , Casey Cott , Mark Consuelos , Marisol Nichols , Ashleigh Murray , Charles Melton , Vanessa Morgan , Skeet Ulrich , Luke Perry , Erinn Westbrook , Drew Tanner .