Peter Davison (The Doctor), Janet Fielding (Tegan Jovanka), Mark Strickson (Turlough), Beth Chalmers (Zorya / Tasja), Ian Conningham (Maximov / Konis), Edward Dede (Volos / Vodyani Leader), Tracy Wiles (Marzanna / Engel)
The Doctor wakes up on a planet of relics, a dead world, a hostile world… He has no memory of who he is, or how he got to be here. He’d better remember soon, because the very structure of reality is at risk and it all has something to do with that strange blue tomb with the light on top.
- The secondary console room is utilised. (The Masque of Mandragora)
- Konis designed the reality engine. It is kept in the TARDIS convocation centre.