Something Wicked This Way Comes (1983)

When two boys (Vidal Peterson and Shawn Carson) become involved in the evil plans of Mr. Dark, a magical carnival owner (Jonathan Pryce), they find themselves in danger and responsible for the survival of their entire town! Mr. Dark has a devilish ability to grant wishes, which he uses to his advantage. When he realizes that the boys have discovered his secret, he sets about tracking them down, along with the creepy Dust Witch (Pam Grier). This spooky Ray Bradbury story is enhanced by the wonderful cast performances, particularly those of Jonathan Pryce and Pam Grier, who are scary enough to stop anyone from hoping for a wish come true!