Animal Instinct was the second story of the audio anthology, The Diary of River Song: Series Five. It was written by Roy Gill and featured Alex Kingston as River Song and Geoffrey Beevers as the Master.
Publisher's summary Edit
And if they are going to escape this place alive, they all must work together.
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- River Song - Alex Kingston
- The Master - Geoffrey Beevers
- Luke Sullieman - Timothy Blore
- Dav Christos / Therian Leader - Delroy Atkinson
- Adella Franz / Therian - Emily Woodward
- River uses a sonic pen torch.
- The Master entered his tomb on Cheska Minor, but woke up on Cheska Major.
- The Master possesses an Obsidian Mirror.
- River compares the Master's style to Moriarty.
- The Master asks, "Who was it said 'Humans should never invite their ancestors round for dinner?'" This both a reference to The Hitchhiker's Guide to the Galaxy and its author, the late Douglas Adams who both wrote and script-edited episodes of the classic series. This is also asked by the Seventh Doctor in the Season 26 story Ghost Light.
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- River reveals to the Master that she married the Doctor. (TV: The Wedding of River Song)
- In light of this encounter, the Master suggests that he should look into River's background. He will eventually do so, as he reveals in his War Master incarnation. (AUDIO: Concealed Weapon)