The Third Doctor and Sarah Jane survived a pterodactyl attack in the 1974 adventure, Invasion of the Dinosaurs. 'The death of time' is referred to by Madame Kovarian in the pyramid. The Death of ...

Just as this season began back at Easter with a dedication to the late Elisabeth Sladen, so it concludes with a homage to that other giant of Doctor Who ... wiser as to who Madame Kovarian was.