Cast
- Tom Baker (The Doctor)
- Lalla Ward (Romana)
- John Leeson (K9)
- David Warner (Cuthbert)
- Toby Hadoke (Mr Dorrick)
- David Troughton (The Black Guardian)
- John Dorney (David Goddard / Oceanic Airforce Commander)
- Lisa Bowerman (Conglom-Net Computer / Oceanic Airforce Pilot)
- Jez Fielder (Neville Sanders / Drudger / Ecidien Cerebus Bird / Albert Chatterton / The White Guardian / Salonu Prime)
- Jane Slavin (The Laan / Salonu)
Doctor Who - The Fourth Doctor Adventures
5.7. Doctor Who: The Pursuit of History
Written by Nicholas Briggs
Starring Tom Baker Lalla Ward
