Casts
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François-Eric Gendron
as Dr. Octavio Beiral
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Amparo Larrañaga
as Florence
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Jean-Claude Adelin
as The Other/Mr. Shadow
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Elena Bagutta
as Mary (as Elena Fernández)
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Fernando Hilbeck
as Dr. Beiral's Father
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Luis G. Gámez
as Poole
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Ernesto Alterio
as Juan
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José Antonio Lobato
as Inspector de policía (as Jose A. Lobato)