Casual, Brooklyn Nine-Nine and more
Part 1 of 2. The Doctor becomes John Smith, a human schoolteacher, to hide from alien villains in 1913 England, with Martha assuming the role of maid and the Time Lord's caretaker. Jessica Hynes.
Conclusion. War breaks out in 1913 as aliens hunt for the Doctor. Meanwhile, John Smith confronts evidence of his life as a Time Lord.
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