The cut/bruise on Laura's head comes and goes. After she is hit by Martin leaving a nasty abrasion on the left side of her forehead, he leaves to go to town after telling her they will sail that night. She goes outside to break the lantern, and the wind blows her hair off her forehead - no bruise. Later that night, she has her hair back in a braid, before they get on the boat - no bruise. Then, when she meets Ben a couple days later, she flips her hair off to one side and he sees the bruise. The very next day (or soon after) she has her hair back again with Ben, no bruise.
(at around 27 mins) When Laura emerges from the sea after her feigned drowning, both she and her hair are soaking wet. However, as she runs towards the beach house her hair is almost dry and flowing behind her. When she enters the beach house, her hair switches back to being wet and straggly.
(at around 1h 28 mins) When Martin has Symphony Fantastique playing in Laura's home at the end, it inexplicably vanishes when Ben arrives.
(at around 1h 7 mins) When Laura posed as a man to visit her mother in the nursing home she left town in a 1967 Ford Mustang. When she returned home she was driving a 1966 Ford Mustang.
When Ben is first in the kitchen with Laura (after she steals the apples), she suddenly speaks with a noticeable Southern accent.
(at around 35 mins) When Laura moves to the new town, she takes a new house. However, there is not a landlord in the world that would accept a new lease from someone having just got into town with no verifiable references, no job, no income, and no rental or mortgage history. It is not enough to just say, "Okay, I'll take it."
(at around 5 mins) In an early scene, Martin is shown playing a CD of Hector Berlioz' "Symphonie Fantastique." He inserts the disc into his player and immediately hears the final movement, "Dream of a Witches' Sabbath." On any recording of the "Symphonie Fantastique" this would be the fifth track and he would have to cue the disc to that track first to hear that section.
(at around 1h 21 mins) When Ben and Laura are riding on the double Ferris wheel at Claude Powell's Super Carnival, Martin is standing there staring straight up at them with unblinking, still eyes. Since he is staring at a particular set of people riding on a double Ferris wheel then his eyes should be moving as he followed their movements. But neither his eyes, nor his head ever move as he is glaring up at them menacingly.
In the boat/sailing scenes, the sailboat is shown in the water at the end of a dock on the beach. That particular sailboat has a fixed keel that draws about 5-6 feet. The water depth at the end of the dock is not deep enough (and is surrounded by visible sand bars). While out on the night sail, the close-up shots show the boat on a port tack. Then it switches to a distance shot of the boat and it's on a starboard tack. Then it switches back to a close-up on a port tack. After tacking to head back to shore, the vessel is shown heeling over considerably, yet Martin and Laura are both sitting on the low side - which an experienced captain would NOT allow them to do. They should be sitting on the high side to keep the boat from heeling over so much.
(at around 1h 25 mins) When Laura comes home from the picnic with Ben, she switches on some music and there are several cassette tapes cluttering around the stereo. When she runs downstairs a few minutes later and hears the music start again, the tapes are gone.
This is because the stereo was originally sitting on top of a table or desk, and when she runs downstairs later it has been set (by Martin, off-screen) on the floor against the door.
(at around 1h 11 mins) When Martin is in the nursing home, he asks a young brunette nurse for a favor. He would like to know about the people visiting Laura's mother. When he is on the way out, he is stopped by a nurse with short blonde hair. The nurse says to him that he asked her earlier about the visitors. This is incorrect, as he did not ask her, he asked her colleague.
However, it is probable that Martin has been telling this lie separately to several nurses, using his charm and wit.
However, it is probable that Martin has been telling this lie separately to several nurses, using his charm and wit.
(at around 47 mins) When Laura first goes over to Ben's house for dinner, Laura makes the comment that she likes Classical Music, and then elaborates, saying anything except Berlioz. Hector Berlioz is a Romantic Composer. However, the term "Classical" is commonly used by the general public to refer to instrumental or orchestral music regardless of the time period in which it was actually created.
(at around 23 mins) When Laura escapes in the yacht, two crew members can be seen in the area below deck.
Actually, no crew members are visible in the area below deck. There are several moving and hanging objects that give the illusion that there are 2 people below deck.
(at around 14 mins) When Laura throws a stone at the street light by the beach, the stone clearly misses the bulb, yet it breaks anyway.
(at around 19 mins) As Martin brings Laura her coat right before they go sailing, you can hear a distinct clatter in the background. But neither Martin nor Laura could have made the sound.
(at around 1h 12 mins) When Martin goes to take a drink at the water fountain (after a disguised Laura drinks), it sprays into his face. It is obvious that the squirt of water came from a separate source, not from the water fountain spigot.
Sara does not raise her knee high enough to reach her opponent's crotch at 1:30'.
On the DVD case that was released around 2009 there is a picture of Laura at the top, and Martin at the bottom right corner walking away from their Cape Cod vacation house. But the house that is pictured is the rear façade of the fake house that was built in North Carolina for this movie. This rear of the "house" is never shown in the movie, but can be found on the internet as the movie set, and this is that rear façade picture right down to the last detail. Why THIS particular picture is used to depict the house is a complete mystery.
The woman from the YWCA calls Martin at his office about halfway through the movie, to "give her condolences", and ends up enraging him revealing what she knows. How did she know where he worked? (Even if Laura's "obit" was listed in the paper, it wouldn't have revealed Martin's workplace, only Laura's)
Obviously, a ring cannot produce any sounds, even if shining, as shown at the very end of the movie.
When the song "Brown Eyed Girl" is being played and Laura and Ben are seen backstage at his drama classroom sorting through costumes, Laura is seen in a black costume looking at herself in a mirror. At the bottom right of the screen a beardless male face appears in this shot out of the darkness. This is not the character of Ben because he has a very prominent beard.
Very obvious (even if intended) lighting of the ring at the very end of the movie.
Obvious wig worn by the stunt double when Sara falls forward on the piece of furniture and then on the ground.
(at around 33 mins) When she arrives in Iowa on the bus, you see a South Carolina highway sign (S.C. 28) reflected in the window of the bus as Laura is looking out the window.
(at around 53 mins) When Ben is talking to Laura outside the library after her first day of work, he is wearing a blue shirt and gray jacket. When he turns to walk away at the end of the scene, a white price tag is visible stick above the collar of the jacket.
Laura would have easily been able to ditch her wedding ring in the ocean (or any place else really) rather than in the toilet and not check that it flushed it properly.
Laura takes the time to cut a small length of her long hair (risking to put ginger hair all over the bathroom floor) before escaping and yet fails to finish the job by visiting a hair salon, having her hair cut very short for example and dye it a different color.
(at around 1h 7 mins) When Laura/Sara is disguised as a boy, she is seen from the back driving into the nursing home, and her hands, with their long, polished, impeccably manicured nails, are visible on the steering wheel. It seems strange, given the extent of the rest of her disguise, that neither she nor her new boyfriend thought to correct such an obvious giveaway.
(at around 1h 20 mins) While on the Ferris wheel, they lean forward as their carriage goes by the ride operator. Leaning forward is listed as one of the most dangerous things passengers can do because of the lack of seat belts. Any ride operator working on the Ferris wheel at any park, fair, or carnival are supposed to tell the passengers to stop leaning forward.