2. "New Earth" - The Doctor and Rose head far into the future to another planet. Which foe from their past intercepts them there?
From Quiz "Doctor Who" - Series 2
Answer:
Lady Cassandra
Heading to the year 5,000,000,023, the Doctor (newly transformed) and Rose head to New Earth where, to the Doctor's surprise, they're summoned to a local hospital specializing in advanced cures for all of the diseases ever seen. There, the Doctor finds the Face of Boe near death, but Rose is sidetracked and attacked by Lady Cassandra who, in a shocking plot twist, takes over the companion's mind to secure a new body and set free the diseased humans in the basement of the hospital building. Lady Cassandra is forced to take over several bodies during the course of the story, inevitably taking over one that puts her near death. After putting an end to the contagion spreading through the hospital and speaking to the enigmatic Face of Boe, he and Rose take Lady Cassandra back in time to meet her former self and, narcissistically, spend her last moments telling her how beautiful she looks.