William Asher, the Executive Producer of "Bewitched" and husband of Elizabeth Montgomery, has stated in several interviews that Season 8 of the show was, in his opinion, the weakest. This is one of those episodes which makes me agree with him.
Tabitha likes the story of Hansel and Gretel but she finds herself feeling very sympathetic for them due to their plight and zaps herself into the story book to ask their father if they can spend the night at her house. When she gets herself into trouble with the nasty old witch, Samantha finds it necessary to go into the book herself to save the day.
Not one of my favourites, but I'm sure it will appeal to children.