Francine Pascal's Sweet Valley High: Return of the Evil Twin

Episode blurb:"Part 2 of our Sweet Valley Evil Twin Adventure! Comedian and Podcaster Ryan Mogge (Hellmouthy) joins Kelly and Katai to talk Francine Pascal’s Sweet Valley High: THE RETURN OF THE EVIL TWIN! This book has everything, and even more, and too much: twins on twins on twins, the Deep South, murder, synesthesia, Everyone Hates Egbert, and Which Twin Do You Want To Be?"

Description
From Goodreads: Screams in the night... Jessica and Elizabeth Wakefield have no idea that their world is about to be turned upside down - again. One year ago, at Christmas, Margo - a girl who looked, talked and dressed exactly like Jessica and Elizabeth - nearly destroyed the Wakefield twins. The nightmare was only over when Margo fell to a violent death. But no one knew about Nora, Margo's own twin sister. Nora, separated from Margo at birth, is outraged when she discovers that the sister she'd never known is dead... and that California's picture-perfect twins are to blame. Now Nora wants revenge, and she's capable of evil beyond anything Margo could ever had dreamed... '''Don't miss Jessica and Elizabeth's terrifying encounter with the evil twin's twin. Will this Christmas be their last?'''