Doctor Who's lore runs deep over the 60 years that the show has been on air, but there are several episodes that define the show in important ways.

The first finale of New Who and often held up as one of the best in the show’s run, The Parting of the Ways proved to be a ...

Doctor Who companions come in four categories ... Martha became the first updated version of the Adult Professional Companion, and Donna was the first Bolshy Companion since Tegan, but this ...