BBC iPlayer - Episode Detail: Doctor Who: Series 4: Midnight The Doctor is trapped on the planet Midnight, as the knocking on the wall begins... 2009-11-08T08:35:10Z tag:feeds.bbc.co.uk,2008:/iplayer/feed/episode/b00c4xjk BBC http://www.bbc.co.uk Doctor Who: Series 4: Midnight tag:feeds.bbc.co.uk,2008:PIPS:b00c4xjk 2008-12-12T00:19:56Z The Doctor is trapped on the planet Midnight, as the knocking on the wall begins... <p> <a href="http://www.bbc.co.uk/iplayer/episode/b00c4xjk/Doctor_Who_Series_4_Midnight/"> <img src="http://node2.bbcimg.co.uk/iplayer/images/episode/b00c4xjk_150_84.jpg" alt="Doctor Who: Series 4: Midnight" /> </a> </p> <p> The Doctor is trapped, powerless and terrified, on the planet Midnight, as the knocking on the wall begins... </p>