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Continuity mistake: Two Canadian motorcycle police drive up and speak to the boat keeper about George Loomis, and a prominent tire mark is on the side of the road in front of the black car. The next time we see this spot as Ray and Mr. Kettering run to the boat it's not there. (01:12:20 - 01:17:10)

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Continuity mistake: At the Rainbow Cabins, Polly Cutler speaks to the Kettering's and holds a bouquet throughout the scene, and it keeps changing positions between shots. (00:45:05)

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Continuity mistake: As Jake gets a shave in the barber shop we see the picture he took of Katherine Cross and Hollis Mulwray in the newspaper. If you look closely it's obvious that these are not the same actors we saw in the previous scene. (00:16:20)

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Continuity mistake: Before George Loomis strangles Marilyn in the bell tower she knocks everything out of her pocketbook looking for a dime to make a call on the second floor pay phone. We see the items on the floor as George walks past on his way to kill her, but later when he returns and picks up her lipstick everything has been moved. (01:07:25)

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Continuity mistake: As Jake gets a shave in the barber shop look at the rings holding up the lower drapes in the front window and you'll see that they move between shots without anyone going near them. (00:17:15)

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Continuity mistake: In the barber shop as Jake gets a shave look closely at the shaving cream on his face. In the first shot it reaches all the way up to his lower lip, but when he gets out of the barber's chair to yell at the banker, it's nowhere near his bottom lip. (00:17:05)

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Continuity mistake: When the Canadian motorcycle police drive up and speak to the boat keeper about George Loomis they're all in direct sunlight with no trees anywhere near them. When they leave several shots later it must be an entirely different time of day because shade from the trees across the street covers the entire set. (01:12:25)

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Continuity mistake: After fishing on the Niagara river with the Cutler's, Mr. Kettering pulls his boat up to a dock that is in the shade. In the next shot the dock is in the sunlight. (01:11:30)

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Continuity mistake: Ray Cutler decides they should leave the Rainbow Cabins and picks up one of two stacks of books on a table to the right of the front door as he talks to Polly. No one goes near this spot but earlier in the scene there was only one stack of books along with a pocketbook (which is now on the floor) on the table. (00:49:45)

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Continuity mistake: As the Canadian motorcycle police drive away George Loomis hides across the street behind a boat and some items that look like they belong in a tag sale. In the next shot as he walks away all of the items on the right of the boat have been rearranged. (01:13:10)

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Continuity mistake: When the Canadian motorcycle police drive up and speak to the boat keeper about George Loomis, one is wearing a white shirt and the other a blue shirt. In the next close-up shot they're both wearing blue shirts. (01:12:25)

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Visible crew/equipment: After his supposed death we see George Loomis back at the Rainbow Cabins and he's standing by the garbage cans in the back of cabin B. We see him through a window and if you look closely a crew member's thumb can be seen on the window at the beginning of the shot. (00:46:35)

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Continuity mistake: Before Jake gets out of the barber's chair to yell at the banker the news paper in his hands is folded in half. In the next shot it's laying flat in his lap. (00:17:10)

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Continuity mistake: When we see Katherine Cross and Hollis Mulwray's reflection in Jake's camera lens, Hollis is standing in a different spot than we saw in the shot before. In the reflection he's in front of the chair but in the previous shot he was next to the chair. (00:16:05)

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Continuity mistake: Polly decides to take a nap in cabin B and the ash tray on the night table moves to the edge during the scene without her going near it. (00:46:45)

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Continuity mistake: There's a very cool shot of Katherine Cross and Hollis Mulwray's reflection in the camera lens as Jake takes their picture from a roof top while they're having lunch. The problem is as the cameraman zooms in, Jake's hands are shaking but the reflection in the lens doesn't. (00:16:05)

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Continuity mistake: At the office, Jake picks up the photos of Hollis Mulwray and Noah Cross, which Lawrence Walsh gives him, with both hands. In the next shot he's holding them with his left hand. (00:13:30)

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Continuity mistake: Mr. Qua is watering the flowers and as Polly Cutler speaks to the Kettering's we see the front of the car and there's no water on the gravel by the tire. After they get into the car and drive away in the next shot, there's a lot of water on the gravel. (00:45:15)

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Other mistake: The first time we see George Loomis back at the Rainbow Cabins after his supposed death he's by the garbage cans in the back of cabin B with a brick wall on the left. The next time we see him two shots later the film has been reversed with the brick wall now being on the right. (00:46:45)

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Continuity mistake: As Jake takes their picture from the roof top we see Katherine Cross and Hollis Mulwray's reflection in the camera lens and her dress is a direct sunlight in the reflection but not in the previous shot. (00:16:05)

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