The annual Christmas special of the game show for gifted youngsters returns, pitting more of the show's cleverest contestants against a team of famous faces. In 2018, Jimmy Carr led the celebrity team to an unprecedented victory, and now returns to defend his title alongside Jo Brand, Richard Bacon and Vick Hope. They will have their work cut out for them taking on 10-year-old spelling and memory master Dan, 12-year-old Latin scholar and chess champion Fabio, and Rahul and Nishi, two teenagers with IQs higher than Einstein.