The Worst Witch (1998 TV series)
The Worst Witch is a British-Canadian ITV television series about a group of young witches at a school for magic. The series stars Georgina Sherrington and Felicity Jones, and is based on "The Worst Witch" books by Jill Murphy (published from 1974 onwards). It aired for a total of 40 episodes spread over three series between 1998 and 2001, before being followed by "Weirdsister College." Most episodes revolved around the school, following the adventures of Mildred and her friends. The series was later followed by "The New Worst Witch", which ran for two series and chronicled the experiences of Mildred's younger cousin Hettie as she attended the school.
The Worst Witch
Miss Cackle has an evil twin sister named Agatha Cackle, who is bitterly jealous of her position of authority at the Academy. In the first of the series, Agatha and her coven of rebellious witches plotted to overthrow Miss Cackle and turn her, the staff, and students into frogs as they slept. Mildred caught them as they brewed their invisibility potion, by turning them into snails and taking them to the school to show Miss Cackle. Ashamed that her own sister would break the Witches' Code, she ordered Agatha to accept defeat and live the code like all decent witches. Agatha reluctantly co-operated. She tries to take over again at the end of series 1, by pretending to be Miss Cackle and dragging Mildred out of the classroom by her ear.