Actori
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Richard ChamberlainNat Bridger
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John HousemanStanley
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Sara BotsfordRidley
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Ken PogueFil Thorner
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Colin FoxDr. Alderman
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Alan ScarfeJohn Websole
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Angus MacInnesLaboratory Guard
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Robin GammellNoah
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George R. RobertsonGeorge Lord
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Tom ButlerDetective Tamblyn
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Barry MorseFred Waites
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Neil AffleckPhone Tracer
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Martha GibsonMrs. Andersen
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Neil MunroWinters
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Mag RuffmanTeenage Girl