Bradley Walsh presents a festive episode in which the Rev Kate Bottley, Dr Ranj Singh, Made in Chelsea's Georgia `Toff" Toffolo and comedian Ed Byrne pit their wits against ruthless quiz genius the Chaser in the hope of winning a potential prize pot worth thousands of pounds. They must work as a team and play strategically to answer general knowledge questions against the clock and race down the game board to the exit without being caught.