The Doctor
Peter Davison
Nyssa
Sarah Sutton
Damon
Neil Daglish
Talor
John D. Collins
Colin Frazer
Alastair Cumming
Robin Stuart
Andrew Boxer
Hostel Receptionist
Maya Woolfe
Guy Groen
The Ergon
Malcolm Harvey
Tegan Jovanka
Janet Fielding
President Borusa
Leonard Sachs
Chancellor Thalia
Elspet Gray
Councillor Hedin
Michael Gough
The Castellan
Paul Jerricho
Cardinal Zorac
Max Harvey
Commander Maxil
Colin Baker
Omega/The Renegade
Ian Collier
Director
Ron Jones
Producer
John Nathan-Turner
Writer
Johnny Byrne
Script Editor
Eric Saward
Music
Roger Limb