Episodes like Midnight and Waters of Mars show the Tenth Doctors actions - and mistakes - when he's been in adventures alone, without a companion. How do you think those episodes would have unfolded had there been a companion present? Do you think the result would have mattered based on the particular companion? Also, do you think any of the Tenth Doctor companion-free spin-off books (Prisoner of the Daleks, The Krillitane Storm, The Taking of Chelsea 426, Autonomy, Judgement of the Judoon) would have unfolded differently had a companion been present?
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