Distributia
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Celia ImrieHerself - Narrator
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Brian WechtHimself - Theoretical Physicist
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Lyn KendallHerself - British Mensa Gifted Child Consultant
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Sharon DanielHerself - Contestant (as Sharon)
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Tudor Mendel-IdowuHimself - Contestant (as Tudor)
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Rubaiyat RahmanHimself - Contestant (as Rubaiyat)
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RiaHerself - Contestant
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EleanorHerself - Contestant