출연진
Peter Davison
The Doctor
Matthew Waterhouse
Adric
Sarah Sutton
Nyssa / Ann Talbot
Janet Fielding
Tegan Jovanka
Michael Cochrane
Lord Cranleigh
Barbara Murray
Lady Cranleigh
Gareth Milne
The Unknown / George Cranleigh
Moray Watson
Sir Robert Muir
Ivor Salter
Sergeant Markham
Andrew Tourell
Constable Cummings
Ahmed Khalil
Latoni
Brian Hawksley
Brewster
Timothy Block
Tanner