Buying Time (audio story)

 was the first story in the audio anthology Dalek Universe 1, produced by Big Finish Productions. It was written by John Dorney and featured David Tennant as the Tenth Doctor, Jane Slavin as Anya Kingdom and Joe Sims as Mark Seven.

Publisher's summary
The far future. Anya Kingdom of the Space Security Service is on a mission investigating an SSS ship crashing on a distant jungle planet. Unknown to her superiors, she’s searching for something very specific... but what she finds is completely unexpected. Her old friend, the Doctor. With a completely different face and no idea what he’s doing there.

Part one
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Part two
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Part three
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Part four
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Cast
to be added
 * The Doctor - David Tennant
 * Anya Kingdom - Jane Slavin
 * Mark Seven - Joe Sims

Continuity
to be added