Continuity mistake: At the beginning of the video call, Emily's camera is aimed directly in front of a large branch/tree trunk that has fallen horizontally. As she scans the log-like branch, Sam's phone shows all upright trees. Even allowing for a reception delay, Sam's phone never shows the log. [The images are even displayed on a split screen.] (00:19:30)
Factual error: The thick chain-links - between both sides of the driver's door - do not prevent the door from being completely closed (but ought to). (00:13:55 - 00:14:33)
Continuity mistake: The creamer (or sugar bowl?) is in front of the tea pot's spout, but rear views of Adye show the creamer behind the tea pot and more to his left. Also, the way Adye is sitting sideways in the chair with his knees crossed, the creamer and tea pot should not even be visible from the rear angle. (00:40:50 - 00:41:12)
Continuity mistake: Nancy places her black purse onto the counter. She pulls the black "Double D" out of her purse and sets it in front of Doug, then shoves it back into her purse. Nancy takes her purse off the counter to leave. For a brief moment, the "Double D" can still be seen on the counter. (00:03:50 - 00:04:42)
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: Near the start Sarah's shoulder restraint/seat belt is not on, but it suddenly is at one point, then off again. (00:03:19 - 00:06:02)
Continuity mistake: The bumps/folds on the light-coloured dress lying on the bed vary. After Pepper the cat tramps on the dress and causes indentations in the fabric, the dress is suddenly lying smoothly on the bed. (00:30:18 - 00:30:46)
Continuity mistake: Vincent has a diagonal "V" or wishbone-shaped tattoo (possibly a scar) on the right of his neck when he gets to prison, but it becomes a vertical line of letters (possibly chain links) seconds later. (00:05:39)
Factual error: It's not physically possible to remotely cause an elevator to fall to the bottom of the shaft. Even if the Heart somehow gained full control over the motor, there are emergency brakes on the elevator itself that engage if the elevator begins to reach an unsafe speed.
Continuity mistake: Morgan and Sophie take far too many steps to get into the tunnel, then take many more, which take them past the man on the left, but the man is still ahead of them. After they take more steps and are past him, they are back at the tunnel entrance. (00:23:18 - 00:23:50)
Continuity mistake: When the first police officer looks at the body, Maggie's long hair is down her back, but is not when an officer takes a photo. (00:01:38 - 00:02:33)
Continuity mistake: Sarah is sitting on the floor, covered with a blanket, and her feet, in black socks, are exposed. But in the next shots, they are covered and uncovered. (01:32:07)
Deliberate mistake: When they're watching the footage of the tsunami hitting Cannon Beach, Sabrina turns the TV off as the shot pulls backwards. Suddenly, the glare on the TV appears out of nowhere.
Continuity mistake: In the hospital, Sebastian's head is centered on the pillow. When the camera shifts, the top of the pillow to the right of his face is angled too low towards the upper-right of the screen. (00:02:26 - 00:02:51)
Continuity mistake: The scenery view shots near the beginning of the movie apparently are not meant to represent the passage of time (such as "one year later"), so the various changes in foliage - from green leaves (Summer) to leafless trees (Winter) to orange leaves (Autumn) to green leaves (Summer) and back to Fall foliage - do not make sense. This inconsistent foliage continues into the movie. (00:05:30 - 00:06:34)
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: The paramedic in the ambulance just started cutting off the patient's shirt (with some difficulty) and there was sound from the scissors snipping. After she glanced away for a second, during which time there was no sound of her continuing to snip the shirt, the slit in the shirt was about three times as long. (00:08:20)