Trapped in a world unlike any other he has seen, the Doctor faces the greatest challenge of his many lives. One final test. And he must face it alone...
Rachel TalalayDirector
Steven MoffatWriter
Peter CapaldiThe Doctor
Jenna ColemanClara Oswald
Jami Reid-QuarrellVeil
55 minutes
2015-11-28
English
BBC
259 days ago
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