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Laura Prepon of ‘OITNB’: ‘The Girl on the Train’ film does justice to the book

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Actress Laura Prepon tells TODAY’s Savannah Guthrie that it was “truly magical” to go from working with the “incredible cast of women” on “Orange Is the New Black” to working alongside Emily Blunt a few days later on “The Girl on the Train.” She also talks about getting altitude sickness climbing Mount Kilimanjaro.