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Continuity mistake: Shake has only one Pepsi which he gives to George, then later there are two. (00:03:35 - 00:05:05)

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Continuity mistake: As The Beatles leave their hotel room, in the corner on a left is a guitar case, a vase, and a bottle of Pepsi underneath the mirror. When they come back the bottle of Pepsi is gone. (00:19:00 - 00:24:35)

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Continuity mistake: On the train we never see Shake hand anything to John then all of a sudden, he has a Pepsi and his hand. (00:04:40)

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Continuity mistake: When everyone is sitting down eating at the rancher's house, just as he's saying grace, the rancher takes his false teeth out and puts them in his pocket. In the very next scene they are back in and he's chewing again. (00:14:45)

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Continuity mistake: In the final bird attack on the house Mitch runs to Lydia and Cathy huddled in the corner by the bookcase. The lighting has been moved and the shadow on the red books in the bookcase disappears in the next shot. (01:42:55)

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Continuity mistake: Dave only takes one utensil on his tray, later he has two. (00:59:00)

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Continuity mistake: When Dave gets his supper, the order of the slop from right to left is yellow, light brown, light brown, dark brown. Later when he's eating, the order is yellow, orange brown, dark brown, light brown. (00:59:00 - 00:59:50)

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Continuity mistake: In the bell tower the shadow is at about 45 degrees, but when Marilyn walks there the sun is overhead. (01:03:10 - 01:05:40)

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Continuity mistake: When Exley ends up at the boxes at the end the fight, they are in a different position than at the beginning of the scene. The third row of boxes are now pushed in so that there is a place for Bud White to put Exley's head. (01:48:20)

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Continuity mistake: The American flag on the raft moves from shot to shot. That can't happen, because the raft was tethered to the spaceship while Taylor was throwing the supplies down. (00:10:15)

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Continuity mistake: They shut all the blinds at the Victory Motel, but later some are open again. (02:00:00)

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Continuity mistake: Exley's eye injury is much worse at the Victory Motel, and it's on the wrong eye all of a sudden - for the rest of the movie. (02:01:30)

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Continuity mistake: Right after the fight the folder behind Exley's head is yellow, yet later it changes to dark green. (01:48:25 - 01:51:05)

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Continuity mistake: Bud and Exley are sitting in their car talking - Exley looks OK. His lip and eye are almost healed and there's only a little black and blue on the upper part of his left cheek. Than in the next scene with Lyn he looks like he's been beat up again worse than before. (01:56:10 - 01:56:40)

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Continuity mistake: Exley has gauze or cotton stuffed on the left and right side of his upper lip (a la The Godfather). It's supposed to look like swelling from the unbelievable beating he just took. If you look at him closely in these several shots, the amount of cotton in his lip changes. Then later the bruises are only on his left cheek, with no swelling of his lip. (01:50:45 - 01:52:20)

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Continuity mistake: Exley's little cow lick bangs, on the left side of his forehead, changes a lot throughout this scene. (01:52:10 - 01:53:20)

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Continuity mistake: The first scene that they show of the train going up the Hudson River is wrong. The hills in the background are much further up the river past Croton NY. When they are eating the train is back down near the wider part of the Hudson around Tarrytown NY. (00:45:25 - 00:47:00)

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Continuity mistake: In the last scene before Chicago the train is going through the tunnel at Breakneck Pass north of Cold Spring NY. When they're going back home at the end of the movie theoretically they should be going the same way but they're not. The final tunnel shot in North by Northwest is the Southern Pacific railroad tunnel between Santa Susana and Chatsworth California. (01:00:10 - 02:16:05)

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Continuity mistake: In the scene where Eve writes on the note pad she doesn't write enough. Later you can see much more to the address. (01:20:50 - 01:25:15)

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Continuity mistake: In the very first scene when the train pulls out of Grand Central Station you can see that the sun is setting. Then when they sit down to eat it's the middle of the day again. (00:45:25 - 00:46:50)

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