The Sarah Jane Adventures, Season 3

Investigative journalist Sarah Jane Smith, one-time companion to The Doctor, is back for a third series of alien-busting adventures, from creator Russell T Davies, which also features a special appearance from The Doctor himself, David Tennant, who stars in two episodes. Sarah Jane is accompanied by her adopted son, Luke, his streetwise pal, Clyde Langer, their schoolmate, Rani, who lives opposite and has aspirations to become a journalist like Sarah Jane, and their Xylok super computer in the attic, Mr Smith. Sarah Jane's robot dog, K-9, also joins the gang on their adventures.