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The Cognition Shift was the fourth and final story in the audio anthology Hearts of Darkness, produced by Big Finish Productions. It was written by Lisa McMullin and featured Derek Jacobi as the Master and Paul McGann as the Eighth Doctor.

Publisher's summary[edit | edit source]

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Plot[edit | edit source]

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Cast[edit | edit source]

References[edit | edit source]

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Notes[edit | edit source]

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Continuity[edit | edit source]

  • The Master in the Doctor's body says "I am the Master and you will obey me," (TV: Terror of the Autons, et all).

External links[edit | edit source]

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