The Time War. The Doctor has been injured and brought to a Time Lord field hospital. His body glows with energy, but this is no regeneration into a future form - instead, the Doctor's past faces begin to appear as he flits haphazardly between incarnations... Two's Company by Lisa McMullin. Back on Earth, the Doctor finds a clue in the search for the origins of the degeneration weapon. In his Sixth body, he meets Jackie Tyler and Lady Christina de Souza - thrown together by fate, or something more? - in pursuit of a powerful item of jewellery. Meanwhile, a Time Lord renegade has duped Harry Sullivan into helping him stop the Doctor's travels before they begin - and all are set on a collision course. CAST: Colin Baker (The Doctor), Camille Coduri (Jackie Tyler), Michelle Ryan (Lady Christina), Christopher Naylor (Harry Sullivan), Michael Maloney (The Renegade), Charlie Tighe (Jonty / Postman / Newsreader. Special appearance by: Tim Treloar (The Third Doctor) Other parts played by members of the cast.