All 14 second-series episodes of re-launched BBC television sci-fi classic, written chiefly by Russell T. Davies and starring David Tennant as the latest incarnation of the legendary Time Lord. In this series, the tenth Doctor, takes companion Rose Tyler (Billie Piper) to New Earth and struggles to overcome the effects of regeneration. In the opening Christmas episode London is deluged by Santa Claus impersonators and Christmas trees intent on malice. Mankind is threatened by a planetary invasion and there's only the Prime Minister to battle it out. Episodes are: 'The Christmas Invasion,' 'New Earth,' 'Tooth And Claw,' 'School Reunion,' 'The Girl In The Fireplace,' 'Rise Of The Cybermen,' 'TheAge of Steel,' 'The Idiot's Lantern,' 'The Impossible Planet,' 'The Satan Pit,' 'Love & Monsters,' 'Fear Her,' 'Army Of Ghosts' and 'Doomsday.'