When a cheer squad practices their routines on Halloween weekend in an abandoned school, they are picked off one by one by an unknown killer. Kerri Medders, Tiera Skovbye, Missi Pyle, Alten Wilmot, Sierra Holder, Alexandra Beaton, Rudy Borgonia IV Added on Amazon Prime 2023-02-03. Added on HBO 2023-05-11. Youtube Trailer