High Quality Content by WIKIPEDIA articles! "Planet of the Dead" is the first 2009 special of the British science fiction television series Doctor Who that was simultaneously broadcast on BBC One and BBC HD on 11 April 2009. It was the second of five special episodes (including Dreamland) broadcast throughout 2009 and early 2010, which served as lead actor David Tennant`s denouement as the Tenth Doctor. He is joined in the episode by actress Michelle Ryan, who plays Lady Christina de Souza, a one-off companion to the Doctor. The episode was co-written by Russell T Davies and Gareth Roberts, the first writing partnership since the show`s revival in 2005.