A case of mistaken identity propels the Doctor into another adventure with River Song as she attempts to steal the most valuable diamond in the universe.
Doctor Who Christmas specials are a strange beast. They have to appeal to a broader audience than usual, many of whom may only watch the show once a year. They often form a bridge between one series finale and the start of the next. And they have to embrace the seasonal spirit in a show which is generally at its most comfortable when dealing with terrifying aliens bent on conquest.
As a result, most Christmas specials have either been so closely tied to a wider story arc… Read the full story