Continuity mistake: The doctor has a faint mustache that is significantly darker/longer when he walks into the next hallway. (00:36:47)
Continuity mistake: Tree foliage is inconsistent, changing several times within the first minute (Fall-Winter-Summer-Fall-Summer). Tree foliage even varies with which side of the road is being shown, such as Winter leafless trees between houses on Liam's side but Summer green leaves on Breanna's passenger side of the car (followed by Winter leafless trees when they get to the bank's parking lot). The inconsistencies persist to the end, with Fall-Winter foliage in the aerial view but Summer at street level. (00:00:20 - 00:09:27)
Continuity mistake: In the ice cream and hot cocoa parlor, the jar of candy canes/sticks is closer to the gingerbread house than the cash register. In the rearview, the three objects are close together, with little space between them. Later, the reverse occurs: the three objects are close together in the rearview, but the jar is back to being closer to the gingerbread house in the front view. (00:13:30 - 00:15:45)
Continuity mistake: When in the cyclone stadium scene, you can see two water people behind Gale. But later, a different water person is sitting next to the same water person on the right.
Continuity mistake: Dad's fiancée places the photo album on her lap and holds the Christmas dance tickets between both hands. She has no free hands to move the album, but the album is on the coffee table. No one touches the album, but it is at a different angle on the coffee table. (00:09:28 - 00:10:10)
Continuity mistake: Only Rebecca's left breast is exposed when she is being bitten on the neck. However, both breasts (as well as her right shoulder) are exposed after her attacker is beheaded. She opens her eyes and continues lying on the floor. (00:06:43 - 00:07:05)
Continuity mistake: "Gramms" (Maggie Westmoreland) lifts her cup of coffee using both hands and takes a sip. By the time she lowers her cup to the table, her glass of water goes from over half-full to less than half-full. Nobody refills the glass, but it is back to over half-full. Thereafter, the level of water in the glass alternates after almost every view of Tracey. (00:02:05)
Continuity mistake: Aamal hangs her daughter's photo from the rearview mirror, and it usually extends beyond the height of the mirror by an inch or so. However, the close-up shows the entire photo within the mirror. (00:15:54)
Continuity mistake: They say Eden's former partner died in a diving accident in Barbados. Later in the movie, they are looking at statements from witnesses to the drowning from Bermuda.
Continuity mistake: When the girls are vandalising Jeff's house, when they're almost done, Josie and Isabel are in the van, almost kissing but then the bomb goes off. A second after the bomb, the van is empty and both girls are on the street.
Continuity mistake: The right side of Miller's [Ryan Phillippe] shirt collar is underneath his suit jacket, but in side views, the shirt collar extends above the jacket (i.e, is visible up his neck). (00:08:45 - 00:09:10)
Continuity mistake: While Lucky does push-ups on the floor, the positions of the pack of cigarettes and lighter on the coffee table change. In the side view, the cigarette pack goes from partially behind the glass to a couple of inches to the right, and the lighter goes from mostly to the right of the cigarettes to behind the pack. (00:42:08)
Continuity mistake: Alice stands in the doorway on her way to the elevator. In the front view of her, a long fern leaf extends to the inner edge of the door frame. In the rear view, the fern leaf's long tip extends a couple of inches into the doorway. (00:02:40)
Continuity mistake: Lily has 4-5 stacked pancakes on her plate, including a half-eaten one on top. After she pours syrup on the stack, there are suddenly 7-8 pancakes, arranged differently. Lily may have time to cut 1-2 pancakes into pieces, but nobody is close enough to the table to add any pancakes to account for the increase. (00:04:40 - 00:05:03)
Continuity mistake: The front view of the desk shows a few neatly arranged and parallel piles of papers, but the view from the desk's chair shows the piles non-aligned and the highest pile (thick file folder) more askew than the others. None of the men are touching the papers. (00:07:30)
Continuity mistake: Leah pours some wine, then sets the bottle near the centre of the counter (next to the bowl). The bottle is closer to the edge, back near the centre, then towards the edge of the counter again. Leah does move her cell phone with her right hand a couple of times and holds her glass in her left, but it doesn't appear she drinks any wine and there's no sound to indicate she refills her glass or moves the wine bottle. (00:07:45 - 00:08:50)
Continuity mistake: When the older sister impales herself on the broom handle, her head changed from next to her little sister's hands, at the base, to halfway up the staff with almost a foot of distance between her head and her sister's hands.
Continuity mistake: Near the start the left side of Romy's hair dangles, but strands are suddenly held behind her ear. (00:06:45)
Continuity mistake: The cases of "Gatorade" next to Trevor's left side are stacked to his waist. Trevor moves the case that is under Megan's elbow. When Trevor turns around, the cases next to him are instantly stacked to his chest. (00:09:25)
Continuity mistake: Cait plays the "forehead game" and correctly guesses that she is "snow". Cait apparently removes the paper from her forehead (off-screen). The timer bell rings, and the paper is on Cait's forehead as if she does not take it off. (00:57:28 - 00:58:08)