|Watch North by Northwest on Amazon Instant Video|
Cary Grant stars as an advertising executive mistaken for an international spy. After being kidnapped and held hostage, he escapes and is chased around the U.S., trying to figure his way out of it all. Eventually he's recruited by the FBI to continue letting the baddies think he's one of them so that lady spy Eva Marie Saint can get the goods on them. You could call women "lady spy" back then.
For me, it was all very convoluted and hard to follow, and I didn't particularly enjoy it.