Revealing mistake: At the cocktail party in his honor, Rita Richards introduces herself. Joaquin Phoenix's scotch is in a transparent plastic cup, and you notice what happens in most movies, here with particular clarity; when he brings it to his mouth, he does not take even a sip, but just pretends. (00:06:05)
Revealing mistake: Just before Madison is about to be pulled up the stairs, it's quite too obvious that is isn't Kennedi Clements, rather a stunt double.
Revealing mistake: When Bradley come in the restaurant and ask the guest to apologise, he is starting to take the table cloth with everything on it but, while he is doing that, behind him you can see that the view of the restaurant it has a blue screen all over. You can even see the bushes outside.
Revealing mistake: When Rachel has a red turban on and is supposed to be bald, you can see her hair under the turban.
Revealing mistake: The protagonist is in the interrogation room. The clock on the wall shows 10:10, and stays that way throughout the scene, which lasts longer than a minute, close to two. (00:19:40 - 00:21:30)
Revealing mistake: In the flashback of the death of Noah's parents, besides the obvious clichè of insta-explosion on impact, it's obvious in the second shot that the car is exploding from within the passenger seats. (01:09:55)