River Song teams up with the Doctor to stop the Discordia...the Fourth Doctor.
Romana
The Fourth Doctor, Romana, and K9 have to stop an alien invasion in 1960s...
Gallifrey sees the time anomalies in action and realizes it's time to bring in...
The Doctor's old school pal Drax gets him and Romana in quite a bit...
Jimmy and Tom meet more Avengers with "Hulk vs the World" and "Meet Captain...
The Doctors, all of them, unite their efforts to save the universe. Again.
The Doctor checks into an adventure he doesn't quite remember with a pair of...
A mysterious force threatens the Doctor...in all his incarnations!
The Fifth Doctor. "Earthshock," Episode One
The Fourth Doctor. "Logopolis," Episode One.
