WHAT IT'S ABOUT The town of Riverdale is in a tizzy over the recent disappearance of a popular teen, and foul play is suspected. Other big changes over the summer: Archie (KJ Apa) has decided he wants to go into music; Betty Cooper (Lili Reinhart) still has a huge crush on him; new girl Veronica Lodge (Camila Mendes) arrives from New York and checks out Archie, too.