Continuity mistake: His pickup truck windows are down during the car chase but once the pickup submerges in water the windows are miraculously up, giving him a chance to escape. (01:21:30 - 01:29:00)
Continuity mistake: When Charlie throws Scott over the balcony, he crashes into the chandelier and it partially tears away from the ceiling. Sparks ensue, but the light remains fully functional. The camera switches to Scott on the floor then back to Charlie where the chandelier can be seen worth all but one light out. There is no visible difference in the room lighting. Later, when Charlie is chasing Scott and Annie with the shotgun, Charlie screams "Lights out!" and shoots a fully functional chandelier.
Continuity mistake: Mulligan hands Gabriel a SIM, and later on it becomes an SD memory card. (01:36:00 - 01:37:27)
Continuity mistake: Mario was chewing a mouthful, then lifted his drink to wash down the food, but when the camera shifted, he was back to chewing a mouthful. (00:01:59)
Continuity mistake: The cigarette the homeless man offered to Frank had a brown filter but was white when Frank had it in his mouth. (00:39:10)
Continuity mistake: When Alicia puts flowers on her mother's tomb, she casts a shadow on the gravestone in side view, but none with the camera behind her back. (00:03:05)
Continuity mistake: When the girls bring a birthday cake into Judy's room at the first time, her bed sheet is patterned with what looks like flowers but when Judy is fast asleep the next time, the sheets are plain white. (00:52:30 - 01:15:30)
Continuity mistake: When Kip is parked outside of "Payless Drugs", the driver's side windshield is smeared/smudged but is clean/clear when he pulls out seconds later. (00:37:48 - 00:38:19)
Continuity mistake: For a second time in the movie, someone buzzes June on the intercom. She tries to overcome her fears and get out of the apartment, but can't. She shuts the door, leans with the left hand on the doorframe by the chain, and lowers her arm. In the next shot, Naomi Watts is breathing deeply still with her hand by the chain. (00:06:05)
Continuity mistake: After the cover is removed from Judge Straight's head, the camera shifts to him over 40 times within about 7 minutes and his hair looks different almost every time. Initially, a back view of the judge's head shows long dishevelled hair with some strands above his head. A little later, a side view shows his hair mostly combed (not unruly). The location of his part varies (right side to middle). He may or may not have bang strands dangling; if dangling, the number and direction of strands vary. (00:02:48 - 00:04:40)
Continuity mistake: When the guy leaves the motel, he only grabs his jacket, but when he's outside, he has a helmet in his hand. (01:14:55)
Continuity mistake: The bartender pours two beers that have no foam on the top. When the beers are set on the table they have about one inch of foam. When the camera angle changes there is no foam. (01:18:45)