Ηθοποιοί επεισοδίου
William HartnellThe Doctor
William RussellIan Chesterton
Jacqueline HillBarbara Wright
Maureen O'BrienVicki
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John Scott MartinZarbi
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Robert JewellZarbi
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Jack PittZarbi
Gerald TaylorZarbi
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Roslyn de WinterVrestin
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Arne GordonHrostar
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Arthur BlakeHrhoonda
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Hugh LundZarbi
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Kevin ManserZarbi
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Catherine FlemingAnimus (voice)