The ultimate guide to the adventures of the Doctor’s most enduring companion! Written and researched by Andrew Pixley. Sarah Jane Smith – journalist, mother and friend of the Doctor's! Over the last few years, Sarah Jane has been responsible for saving the Earth on countless occasions. With the help of her robot dog K9, her computer Mr Smith, her son Luke, and her young friends Clyde Langer and Rani Chandra, she’s faced a multitude of menaces including Judoon, Shansheeth, Slitheen, the Trickster … even the Mona Lisa! And twice recently, she was visited by the last of the Time Lords, in remarkable adventures that would test her courage to the limit.