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Continuity mistake: The little girl appears to have been given a haircut after we see her at the empty rabbit cage, most apparent when we see her the following morning. (01:27:00 - 01:30:30)

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Continuity mistake: When Michael Douglas is listening to Alex's tape it's midday when he enters the East River Drive underpass and comes out the sun has clearly set. Alex's tape doesn't skip a beat. (01:17:00)

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