Mr. and Mrs. Twit are two of the most disgusting, nasty, and horrid characters in children's literature, from their repulsive looks (the story opens with a long, detailed description of Mr. Twit's unkempt beard) to the mean and horrible tricks they play on one another (Mrs. Twit enjoys hiding her glass eyeball in unexpected places and lacing the spaghetti with worms; Mr. Twit works for weeks to convince his wife that she has "The Shrinks"). Callow captures the dry humor of Dahl's narrative voice perfectly, and creates appropriately nasty voices for Mr. and Mrs. Twit as well. Unfortunately, the thick accents and loud tones of these voices often mean that the dialogue is difficult to understand. Still, Callow's able narration brings Dahl's ironic sensibilities to life, and a sense of satisfaction is inevitable when the terrible Twits come to an appropriately gruesome end.