First of the New Series Adventures. The Ninth Doctor and Rose land in 1920s London.
- Call-Back: The TARDIS landing in a junkyard invokes the first story, An Unearthly Child, suitable for the first in a New Series. The Doctor also sees a painting of The French Revolution and says "That's not right", which Susan also said in the first episode when reading a book on the subject.
- Continuity Nod: When Repple says his appearance was changed and he was exiled to Earth the Doctor says he knows the feeling.
- Rightful King Returns: What the characters are trying for Russia, as Freddy is apparently the rightful heir, and Dastaria, which Repple claims to be the deposed King of.
- Terrible Ticking: Inverted. Everyone could hear the ticking except Repple because he's the robot making the noise.
- Tomato in the Mirror: Repple finding out he is not Shade Vassily but a clockwork robot.
- Uncanny Valley: In-Universe. Due to Melissa's information on how humans looked being inaccurate her face is described as a "parody of humanity", with eyes that seem too human.