Trivia: Possible Spoiler: At the time of this writing, it is generally believed that the "Mister Saxon" referred to throughout Season 3 will turn out to be The Master. One piece of evidence backing this theory is The Master's penchant for anagrammatic aliases: Mister Saxon is an anagram of "Master No Six," and if it's true, John Simm would be the 6th actor to play The Master. [Russell T Davies (who wrote most of the episodes) has said that the anagram is pure coincidence which was picked up by some people, but was completely unintended. Still interesting regardless.]
Add timeCaptain Defenestrator
Trivia: Jack causes the Clock Tower to light up. At the end, the writer wanted someone to say 'Jack, did you remember to turn off Big Ben?' then have a bomb land on the Houses of Parliament and the Clock Tower. (The Houses of Parliament did get bombed. The joke was to make it all Jack's fault).
Trivia: When Harriet Jones is explaining the sub-wave network to the Doctor's companions she says "It was created by the Mr. Copper Foundation" This is a reference to Mr. Copper from 'Voyage of the Damned' who stayed to live on Earth and who probably would have had the advanced technology from the planet Stow where he came from.
Add timeProfessor Lazarus
Trivia: When The Doctor puts on the gas mask and looks at the soldier who already has his mask on, The Doctor asks, "Are you my mummy?" This was a reference the "Empty Child" episode where infected people wearing gas masks constantly say,"Are you my mummy".
Add timeMaria Santos
Trivia: Filming of this episode was delayed for several reasons. One was that the school that they were filming in was discovered to have asbestos just after they started, so they needed to find a new place. And in the scene in and outside of the cafe, filming was delayed when several drunk people wandered onto the set and started messing everything up.
Trivia: As the Doctor and Donna stand in the room, Caecilius enters. He is played by Peter Capaldi, who later on took over the role of The Doctor from Matt Smith. It was later written into the storyline that the reason the Doctor's regeneration picked that face was as a reminder to himself that he saves lives.
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