Doctor Who returns in an all new Christmas Special in which the Doctor and Clara face their Last Christmas. Trapped on an Arctic base and under attack from terrifying creatures, they find themselves calling for help from a familiar Christmas hero - Santa Claus (Nick Frost)! You can also see the documentary Doctor Who: Earth Conquest - The World Tour, in which the stars of the show (Peter Capaldi and Jenna Coleman) circumnavigate the earth for fan events and publicity appearances in Cardiff, London, Seoul, Sydney, New York, Mexico City and Rio de Janeiro.