Jamie Mathews comes back to her hometown of Cordvord, Florida, for her 10-year high school reunion. Jamie awaits a confrontation with her ex-best friends and fellow mean-girl-clique members. Little do they know that their feud is the last thing they have to worry about. A serial killer begins targeting those around The Vicious Four alumni. The girls must work together to uncover the mystery before they reach the end of death row. Season 1 Stars: Hunter King as Jamie Mathews Janel Parrish as Stella Greenberg Katie Stevens as Avery Newton Milo Ventimiglia as Vincent Bruno Stefanie Scott as Nina Voss Nick Fink as Steven Newton Carlson Young as Brit Hann Nolan-Gerard Funk as Ben Codd Kimiko Glenn as Paige An-Codd Nicola Peltz as Gabriella Fisher Season 2 Stars: Hunter King as Jamie Mathews Janel Parrish as Stella Greenberg Katie Stevens as Avery Newton Nick Fink as Steven Newton Madelaine Petsch as Fiona Hawking Billie Lourd as Kate Hawking Santiago Segura as Brendon Mendes Brian Marc as Eric Mendes Skyler Samuels as Charlotte Weber Aisha Dee as Ava Collins Nicholas Gonzales as Daniel Mendes Marisol Nichols as Rosaline Mendes Stefanie Scott as Nina Voss