The Doctor investigates a mysterious book leads to the suicide of anyone who reads it and the secret of the vault is revealed.
Series: Doctor Who
Season 10, Episode 6
Next: “The Pyramid at the End of the World”
The Doctor remembers the execution of Misty from long ago.
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The Doctor is standing in the dark hall when representatives from the Vatican arrive to request his help.
Bill and Nardole attend the suicide party of a bunch of scientists and learn the truth of reality.