Ηθοποιοί επεισοδίου
Peter DavisonThe Doctor
Nicola BryantPerpugilliam "Peri" Brown
Janet FieldingTegan Jovanka
Mark StricksonVislor Turlough
★
Edward HighmoreMalkon
Peter WyngardeTimanov
Dallas AdamsProfessor Howard Foster
Barbara ShelleySorasta
Anthony AinleyThe Master
Gerald FloodKamelion (voice)
★
James BateAmyand
★
Jonathan CaplanRoskal
John AlkinLomand