Doctor Who End of Time Part 1 and 2

The Doctor arrives at the Ood Sphere, some time after the events of "The Waters of Mars", and alludes to several intervening adventures. Ood Sigma tells the Doctor he should not have delayed, but the Doctor, aware of the prophecy of one who "will knock four times" and his subsequent death, replies that he was in no hurry. The Doctor is visibly disturbed by the The Ood's advancement in a short period of time. The Ood warn the Doctor of the Master's return, adding that something larger is emerging from the darkness, predicting "the end of Time itself". Doctor Who Episodes


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