Emma Roberts as Chanel Oberlin Jamie Lee Curtis as Dean Cathy Munsch Lea Michele as Hester Keke Palmer as Zayday Skyler Samuels as Grace Abigail Breslin as Sarah Tourse (Chanel #5) Nasim Pedrad as Gigi Oliver Hudson as Wes Ariana Grande as Katherine (Chanel #2) Billie Lourd as Chanel #3 Diego Boneta as Pete Diller Glen Powell as Chad Lucien Laviscount as Earl Niecy Nash as Denise Nick Jonas as Boone
On the 20th anniversary of a horrible crime, an unknown killer is seeking vengeance by eliminating Kappa House sorority members one by one.
