Hack-O-Lantern

"Hack-O-Lantern" is a 1988 action-horror film about Tommy Drindle (Gregory Scott Cummins), whose grandfather Grandpa Drindle (Hy Pyke) has a sinister plan to indoctrinate him into the black arts on Halloween night, drawing inspiration from his own traumatic experience as a child. The story culminates at a town's Halloween party, where Tommy's family and a cop brother (Jeff Brown) try to stop the ritual.