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The Parent Trap (1961) Poster

Goofs

Audio/visual unsynchronised 

While performing "Let's Get Together" with Sharon, Susan plays an acoustic guitar, but the sound it makes is distinctly that of an electric guitar.
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When Susan is supposedly playing the guitar, her fingers aren't moving.
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When Maggie descends the outdoor stairs, they are visually made of stone or stucco, but the sound is that of hollow, wooden steps.
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When the twins' mother (Maureen O'Hara) is singing the song that was played on her first date with their father, her lips do not match the words that are being sung.
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Character error 

Soon after Sharon arrives at Susan's home (pretending to be Susan), Verbena says something about washing all of Susan's dirty camp clothes, but is seen putting many of them directly into the dressers in Susan's room without washing them first.
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When Susan shows up in Boston and greets her Grandfather for the first time, he asks her where is the gangly, 12 year old girl she was. Earlier in the movie, she and Sharon admit they are 13, soon to be 14.
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Continuity 

Ater the fight at the dance, a shot shows Sharon and Susan on the ground, covered in food. Susan's dress, which Sharon had cut the back out with scissors earlier, is brand new, as if it had never been cut.
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When Vicky is offered the canteen of water with the lizard perched on top, the canteen lid is open. When Vicky throws the canteen back, the lid is on.
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When Susan is about to hatch the plan in the tent, she is eating a Popsicle. As she moves around the room, the Popsicle disappears.
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In the isolation cabin, whilst the twins are getting acquainted, Susan's shoes change from white sneakers to blue flats (that Sharon had been wearing).
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When Susan is telling Sharon her plan to switch places, Sharon is holding the ice cream spoon in her hand. In the next shot the spoon disappears.
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The length, shade, and style of Sharon's hair changes in some rear shots of her during camp (it's the stand-in actress.)
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The position of Susan's hand, between shots of her holding her guitar.
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At the isolation cabin, just after the rainfall, Sharon and Susan go outside and the cabin exterior and grounds are dry. They then go back inside and figure out they are twins. Sharon momentarily goes back outside and the cabin exterior is wet, as expected after a strong rainfall.
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Immediately after the rainstorm, Sharon and Susan step outside. Everything is dry, as if it never rained.
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As Susan is being driven to Sharon's home in the Rolls Royce, it has a shallow curved rear window; on the interior scenes the rear window is deep and rectangular.
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When Mitch is introduced to the minister, he is told it is "Dr. Mosby" A short time later, Mitch introduces the minister to Maggie as "Rev. Mosby" . Maggie then calls the minister "Dr. Mosby" without ever hearing him referred to by that title.
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When Vicky and Edna exit Mitch's house, they get into a 1959 Lincoln 4-door. However when they are driving away, (interior shots of) the car in which they are riding is a 1959 Mercury. This is evident by the distinctive types of rear roof pillars that the cars have.
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After Mitch falls into the lake, he talks with one of the twins (Sharon) and puts his wet hand on her shoulder, getting the shoulder of her dress wet. A second later the dress is dry in the spot where he put his hand.
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Miscellaneous 

Just Past 1:09, Susan reveals herself to her mother and grandmother. She speaks a frequent dialogue mistake saying, "I miss not having a mother". She should have said, "I regret not having a mother", or something else that doesn't contradict the situation.
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Revealing mistakes 

While singing "Let's Get Together," twice Sharon's hand momentarily disappears crossing over into Susan's frame.
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During close-up shot of both twins with food smeared over their faces, it is obvious one girl is not Hayley Mills, even under all the goop.
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In the isolation cabin, when the window blows open and the girls try to close it, the stand-in's face is revealed.
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The Thunderbird Mitch Evers is driving is in park.
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Obvious body double for Susan when the table collapses as she and Sharon cat-fight at summer camp.
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Inside rear view mirror on Mitch's Thunderbird disappears and reappears on close shots and long shots.
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When Sharon (really Susan) is in the Rolls Royce in Boston, you can see the buildings, like apartment houses, through the back window. In the shot from the outside of the car, the street is shown, and there are none of the buildings that are seen from inside the car. It is an open street.
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When Susan stands up from her bed and realizes it stopped raining, in the background Sharon (who is supposed to be played by Hayley Mills) does not look like Susan.
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When Sharon and Susan are singing "Let's get together" you can see that Sharon is not pressing down on the piano keys.
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See also

Trivia | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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