Halloween III: Season of the Witch is a 1982 American science fiction horror film written and directed by Tommy Lee Wallace in his feature-length directorial debut. It is the third installment in the Halloween film series and the only entry that does not feature the series antagonist, Michael Myers. Series creators John Carpenter and Debra Hill return as producers. The film stars Tom Atkins, Stacey Nelkin, and Dan O'Herlihy.

Plot

On October 23, 1982, in Northern California, shop owner Harry Grimbridge, clutching a jack-o-lantern Halloween mask, is pursued by mysterious men in suits. He collapses at the shop of Walter Jones, who calls for help. Harry is taken to a hospital and placed in the care of Dr. Daniel Challis, an alcoholic doctor who has a strained relationship with his ex-wife Linda and two children Bella and Willie. Later that night, Harry is murdered by another suited man, who immolates himself in his car. After identifying his body, Harry's daughter Ellie meets Daniel to talk about the suspicious events surrounding Harry's death. They decide to investigate and travel to Santa Mira, California, hometown to the Silver Shamrock Novelties factory, which made the Halloween mask that Harry carried the night of his death. As they check in to a motel, Daniel learns that Harry had stayed there recently.