Thanks to my godson, Theo Leiss, for reminding me of this Halloween treat! The Worst Witch is based on a pre-Harry Potter series of books by Jill Murphy about a school for young witches.  Fairuza Balk, who would later play a teenaged witch in “The Craft” (and who was already a gifted young actress) plays Mildred Hubble, who can’t seem to get anything right until only she can save the day before an evil witch destroys the school.  Diana Rigg plays the school’s headmistress and her evil twin sister and Tim Curry provides one of the highlights as the Grand Wizard.