Halloween III: Season of the Witch

On October 23, in Northern California, shop owner Harry Grimbridge is pursued by mysterious men in suits, with jack-o-lantern Halloween masks in their hands. He collapses at the shop of Walter Jones, who calls for help. Harry is placed in the care of Dr. Daniel Challis, an alcoholic doctor who has a strained relationship with his ex-wife and two children. Later that night, Harry is murdered by another man in a suit, who then immolates himself inside his car. Harry's daughter, Ellie, meets Daniel at a bar. She reveals that she discovered suspicious events surrounding Harry's death. To investigate, the two travel to the Silver Shamrock factory in Santa Mira, California, where the Halloween masks are produced. Upon arrival, they check into a motel, the manager of which reveals that Conal Cochran and his factory, Silver Shamrock Novelties, producer of the popular Halloween masks, are the source of the town's prosperity. While checking in, Daniel learns that Harry was also a recent guest of the motel.