Over the objections of everyone concerned, Endora plans a wild party in the Stephens household to celebrate Halloween, her national holiday. Samantha joins forces with capricious Uncle Arthur to cancel the party before things get out of hand (or more out of hand than usual, that is). Baseball great Willie Mays appears as himself. Originally broadcast on October 27, 1966, "Twitch or Treat" was written by James Henerson and Robert Riley Crutcher. ~ Hal Erickson, Rovi