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Continuity mistake: After Mitch ties the shutter closed both sides of the window look identical with each shudder being seen through the window, but as he walks back into the living room just before the lights go out the left shutter is the same and the right shutter is black. (01:44:05)

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Continuity mistake: As Lydia looks through the window of Mr. Faucet's kitchen there is a distinct pattern on the wall to her left. As she comes through the door the pattern on the wall is different and she's in a different room. (00:59:35)

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Continuity mistake: The lamp over the dining room table, when Melanie brings Cathy back from the bathroom, is not this same lamp that was there as they were listening to the television report. Before it had a glass bottom and now the entire bottom is made of metal. (01:40:15)

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Continuity mistake: As Mitch checks the doors and windows Melanie sits with Cathy on the couch. Notice the fruit bowl under the lamp. At the beginning of the attack the red apple jumps to the front of the bowl from the back without anyone being near it. (01:36:50)

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Continuity mistake: When we first see Annie's house shrubs are growing right up to the edge of the right and the left side of her fence. Then when she is lying there dead the shrubs on the left side of the fence are different. (01:30:30)

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Continuity mistake: After Annie lights Melanie's cigarette her left hand moves from the lighter to her cigarette between shots. (00:17:00)

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Continuity mistake: Melanie's car changes positions from the time she parks near the front steps of the school. As Melanie walks out of the school to sit by the monkey bars to when she runs back to the school, and then when the children run out of the school. (01:09:30 - 01:11:40)

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Continuity mistake: In the shot of Mitch holding the log just before he runs to the window behind the desk, the brown reclining chair that sits by the fireplace has been moved for the camera. We see it there in the scene when Lydia says, "Did you get the windows in the attic Mitch?" and earlier in the movie when Melanie brings the lovebirds in. (01:41:20)

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Continuity mistake: When Mitch is first seen sleeping on the couch, after the last attack, the red throw pillow is protruding out from behind his right shoulder. The next time he is seen from the front the pillow is totally behind his back. (01:45:25)

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Continuity mistake: After Mitch pours out their drinks on the top of the hill he holds the cap on top of the bottle down with his index finger. In the next shot he's holding the bottle further down and his index finger is around the neck on the side of the bottle. (00:48:45)

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Continuity mistake: As she's attacked in the bedroom the first scratch on Melanie's left forearm moves further up two shots later when see it again. (01:48:05)

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Continuity mistake: As Melanie and Mitch walk up the hill behind his house Bodega Bay is at very low tide with a lot of sand bars showing. When they get to the top of the hill it's high tide. (00:48:00 - 00:52:25)

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Continuity mistake: When Mitch reaches out the window to grab the shutter the curtain has been pushed all the way to the left of his shoulder and he isn't touching it. The next time we see the curtain it's covering the entire window to the left of his head. (01:41:50)

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Continuity mistake: When we first see Mitch on the ladder it's resting against the 6th plank below the window. Mitch never moves it but after Melanie hands him the last piece of lumber and he climbs down it's resting against the 7th Plank. (01:34:00)

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Continuity mistake: When Annie gets up and says, " I think I'll have some of that" her cigarette is half gone with a long ash on it. In the next shot as she fiddles with the brandy bottle her cigarette is brand new. (00:42:50)

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Continuity mistake: As Melanie leaves with the tea to go check on Cathy at the school the left side of Lydia's nightgown changes between shots and is no longer protruding from her sweater. (01:07:55)

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Continuity mistake: Before Mitch rescues Melanie from the telephone booth we can see that all the fires are still burning. But in the shot of him rescuing her they forgot to add the flames out in the road behind them. (01:27:40)

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Continuity mistake: After the final attack as Mitch sleeps in the chair the tabletop and the three items on it to his left are lit up. They get much darker the next time we see them. (01:45:25)

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Continuity mistake: No one went near it, but the chair at the left of the dinner table has been pushed in right up against the table between shots. (00:54:10)

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Continuity mistake: As the birds fly out of the fireplace the silver ashtray on the table to the right of Mitch moves closer to him. (00:54:35)

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