Season 4 Episodes13
Cast3

Anthony Stewart Head
Narrator

David Tennant
Self

Catherine Tate
Self
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Ranked #6 of 13 in Season 4•+0.1 vs season avg
Behind-the-scenes look at the making of Doctor Who. Alex Kingston talks about her role as time-travelling archaeologist River Song, the sinister world of the library is explored and there's a feature on the mysterious Dr Moon and Donna's adventures away from the Doctor. Writer Russell

Anthony Stewart Head
Narrator

David Tennant
Self

Catherine Tate
Self
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"River Runs Deep" is episode 9 of Doctor Who Confidential season 4. It scored 7.4/10 from 33 votes, ranking #6 of 13 episodes this season (season average 7.3). It aired on June 7, 2008.