Ηθοποιοί επεισοδίου
William HartnellThe Doctor
Carole Ann FordSusan Foreman
William RussellIan Chesterton
Jacqueline HillBarbara Wright
Ilona RodgersCarol
★
Stephen DartnellJohn
★
Lorne CossetteMaitland
Peter GlazeThird Sensorite
★
Arthur NewallFourth Sensorite
★
Bartlett MullinsSecond Elder
★
Anthony RogersSensorite
★
Eric FrancisFirst Elder
★
Joseph GreigSecond Sensorite
★
Ken TyllssenFirst Sensorite