The Riverdale series premiere, " Chapter One: The River's Edge ," introduces a dark, teen-drama take on classic characters, focusing on the mysterious death of Jason Blossom. It centers on a, love triangle between Betty, new girl Veronica, and the musically inclined Archie, all set against a backdrop of secrets in a small town. The episode ends on a cliffhanger, revealing that Jason did not drown, but was actually murdered.