Doctor Who: The Lost Dimension – Part Five Oversized excitement from deep within the event! Three all-new stories: The Fourth Doctor; Jenny, the Doctor's Daughter; River Song! An unknown force is striking from the depths of space, emerging as impossibly-large white holes over civilized planets, absorbing or annihilating everything that lives. This force has spread throughout all of time, challenging the Doctor in all of his incarnations. But not all of them were at the point of impact – many of the Doctor’s previous selves, along with good friends and companions, are scattered throughout history on journeys of their own. We turn our attention first to the archaeologist of the impossible… River Song!