Factual error: Joel is using a ham radio set to contact his old colony. A shot of the radio set shows it is set to "CW", which is Morse Code, but he is using voice. And the strength meter is on zero. It should be showing the signal strength. (01:24:00)
Continuity mistake: The first time we see the girl the main character fawns on, people on the background keep changing between shots during the beach volley game. (00:08:20)
Factual error: The film consistently mistakes Absinthe ban with Thujone ban. The United States Food and Drug Administration (US FDA) lifted the ban on Absinthe in 2007, 13 years before the events of this film. Thujone is still banned, and Absinthe products must contain less than 10 mg/kg Thujone content.
Continuity mistake: When Millie (in the Butcher's body) chases Nyla and Josh into the kitchen, Nyla turns around and Josh is not near her. But then in the next two shots, suddenly Josh is right next to her on her left. He then disappears from Nyla's side when she grabs the mop, and reappears behind her in the next shot. The scene is cut very frantically, so it can be hard to notice at first, but it's very obvious if you look for it.
Continuity mistake: Yi-Na had her head turned to the right while her dad Sang-Won was talking to her from the front seat and, eventually, Yi-Na closed her eyes. After a camera shift, Yi-Na's eyes were still closed, but her head was turned to the left. (00:04:17)
Factual error: After sleeping in and being late for practice, Jack is driving to the gym. It is supposed to be morning yet the shadows made by the sun show the sun is setting over the ocean and therefore evening.
Continuity mistake: In the first shot of the choir (three students harmonizing on a note) the girl in pink holds the sheet with her left hand at the corner and the right hand in the middle. Cut to the wide shot, and she has the left hand in the middle and the right hand at its respective corner. (00:03:50)
Continuity mistake: Within a scene, Xanthe's disheveled hair often has a different number of curls/waves (especially on the sides) and the tightness/ looseness varies. Sometimes some strands of curls look like loops sticking out sideways; sometimes her hair looks almost straight on one side. The nature of the curls may vary with front and back views at times. In one scene, she had about three loose waves on the left side of her hair then suddenly it looked almost braided (many waves). (00:07:21 - 00:07:51)
Other mistake: In the scene with a leak in the kitchen, the woman fixes it by turning an isolating tap above the leak. However the water would have been travelling up the pipe to the kitchen tap and so that wouldn't have stopped the leak. (00:34:00)
Character mistake: Several police officers are outside the hotel looking for evidence. Inside the room where the murder occurred, other officers/detectives are looking around. None of them are wearing gloves or shoe covers. The hotel manager is the one who found the camera card - even though Det Espada should not have allowed him in the room during the investigation and police should have found it the first day. Det Espada handles the camera card without wearing gloves. Det Espada did not secure the crime scene. (00:35:50)
Continuity mistake: When the Homeland Security guy is sitting in the lobby in Vancouver, Canada, a girl and another man are walking behind him and across the lobby in the wide shot. But when it zooms in on him, the same people and more are walking behind him again as if they never were crossing the lobby. (00:28:45)
Other mistake: The weapon which the gunman is holding is a WWII era Nazi MP38/40 submachine gun. The weapon from the magazine housing to the end of the barrel (muzzle) is completely bent down about 25-30°. There's no way the weapon would shoot as straight as it was shooting earlier if at all. I highly doubt the firing pin/bolt can even make contact with the primer of the bullet in the magazine. The weapon looks cartoonish if anything. (00:48:30 - 00:50:00)
Continuity mistake: Mikey and his friend are smoking the same inch-long joint by the back door which gets passed back and forth - no way they could keep holding/smoking it for that long given how short it was to start with. (00:04:50)
Continuity mistake: After the scavenger hunt goes live, Jennifer follows it with her grandmother Sue and Aidan does so with his niece Emma. Aidan looks at the photos of participants and sees one of Jennifer and Sue at the art class, and right below is one of him holding Emma with the carollers in the background. Immediately after that, he picks up Emma in front of the carollers and takes the photo he had already been looking at.
Continuity mistake: Kareem's mom is talking to her coworker about the fact that her son asked for James to pick him up at school. When she mentions that it's not seen as the coolest thing to date a cop, and a white one at that, her friend goes from hand low, to smoking with that hand, to drinking from the cup, in the span of a few words and a couple quick cuts. (00:09:45)
Continuity mistake: Before the shoot out with police, Hamby's face was not very dirty when he got out of his truck, but it looked much dirtier a minute later. There are additional places near the end when the amount of dirt on his face varies. (01:06:02 - 01:07:00)
Continuity mistake: Theodore rides once the tiny rollercoaster; the cart comes to a full stop and his left foot is in the space between the bars, but in the next shot the left foot is on the outside. (00:48:00)
Character mistake: Dean told Laura that Fiona's toiletry case was in his bag because "She couldn't fit it in her carry-on, so I put it in my luggage." Laura (who had no reason to fabricate the story to her dad Felix) changed the details, which she couldn't know based on what Dean told her: "There were some of his co-worker's toiletries in his luggage. But she couldn't put them in her carry-on for security, so he offered to put them in his luggage." Unable to fit in isn't the same as "for security." (00:13:05 - 00:23:57)
Other mistake: The entire movie takes place during the overnight dark hours. Limited lighting from the car and flashlight somehow manage to illuminate faces, photos, signs, etc. Filming in the dark surely has its challenges, and there has to be a proper balance between lighting and ability of viewers to see what is happening. The "convenient" lighting would be a "deliberate mistake" except for one factor: A full moon (highly illuminated) is shown without radiating the light expected from a full moon. (00:26:25)
Character mistake: NYPD officers have their guns drawn toward the elevator in the Carrington Hotel. When the door opens, Borz, wearing an unbuttoned Carrington jacket - but not the hat or white gloves that the doormen wear - is told by an officer to "hold it" and states that he's "just a doorman." The officer backs up and allows Borz to leave. A police officer would not simply accept the word of anyone in this situation. The person would be handcuffed and detained until the situation is under control and the police determine he was not (or was) involved. (01:24:41 - 01:35:02)