Character mistake: On the day Rebecca arrives home, Junior Douglas says that he was "Valedictorian, Class of '95." Earlier, Drago talked of almost killing Running Buffalo "during that trouble back in the '40's," which would have been about 50 years earlier. That would mean Drago and McLintock were fighting Indians when they were babies, or possibly before they were born!
Character mistake: When Audrey Hepburn confronts Cary Grant by saying, "Carson Dyle had no brother," he would have definitely wondered how she came to know about this and who her hidden source of information was. (01:16:00)
Character mistake: In the scene at Kerim Bey's office, when the bomb goes off, we see a heavy desk topple over. Bey says he was saved because he was relaxing on the couch with a girl. But he wasn't at the desk before either. He was sitting in some sort of sofa arrangement in a different corner of the room. We don't even see the desk before the bomb goes off. (00:32:05)
Character mistake: Dancy orders Peggy to take a left turn into Rigby Road, but she actually turns right to access Rigby Road.