Casual Person

Continuity mistake: Just after Sullivan tells someone to bring him Dorothy, the scene cuts back to the ship. There is a book of paper sheets to draw on and a box of crayons shown in front of Dorothy. The shot then cuts to Tiger, but when it cuts back to Dorothy, the paper and the crayons have changed position. (00:33:25)

Casual Person

Continuity mistake: When Jang and Tiger are talking at the poker game, Jang points a gun at Tiger and is the gun seen pressing against Tiger's forehead. In the next shot, the gun is suddenly a few inches away from Tiger's forehead. (00:18:40)

Casual Person

Stupidity: When Joan is in hell and is confronted by the overlord, she attempts to shoot him with the BFG-9000, so the overlord uses his powers to telekinetically blast Joan away and disarm her. A minute later, Joan picks up the BFG-9000 again, but the overlord never considers using its powers to blast Joan away from him again, which results in him getting killed.

Casual Person

Stupidity: Joan arms herself with the BFG-9000, and she, along with Bennett walk up to an elevator and wait for it to arrive. Once the elevator arrives, Bennett is standing with his body facing towards Joan and is facing away from the elevator. Considering the compound is filled with monsters and demons, it is extremely foolish of Bennett to not face the elevator, or at least be prepared, when it opens. This stupidity results in him getting captured.

Casual Person

Stupidity: When the marines get the reactor working, Dr Betruger stabs Veronica and kills her so that she will not be able to reveal his secrets to them. However, he stabs her in the lower back, so it would still give her ample time to tell the marines what he is trying to hide whilst she bleeds out. Surely it would have been easier to stab her in the neck or slit her throat.

Casual Person

Factual error: When Cassie finds Bryan's phone, Federico sends a text containing a video of Bryan cheating on Cassie. The time displayed on the phone is 6:35PM and the date displayed is May 7, however the scene currently takes place at night and every time an exterior shot of the house is shown during this time, the sky is dark. 6:35PM in May is way too early of a time in the evening for it to already be the middle of night. At that time of year, the sun would not set until much later in the evening. (01:10:55)

Casual Person

Continuity mistake: Nina returns home and starts looking through some mail whilst DeeDee walks into the room and is startled by seeing her. When DeeDee says "You're home", Nina picks up the mail after temporarily putting it down and her left hand is shown holding the envelopes by the left hand side. When the shot cuts, her left hand is suddenly touching the bottom of the envelopes. (00:03:55)

Casual Person

Visible crew/equipment: When Yun-ji hears the sound of a barking dog coming from outside the apartment, he runs outside, then runs down the hallway and stops to look over a small wall once he sees where the barking is coming from. When the camera pans around him, just before it is revealed which dog was barking, the shadow of the camera can be seen briefly cast on his upper back. (00:25:35)

Casual Person

Stupidity: When the overlord confronts Joan, he summons hundreds of demons to make sure that she is cornered and can't get away. However, the demons only appear to approach Joan from behind and from the side. After she kills the overlord, there is an entire area in front of Joan (behind where the overlord was standing) that is completely free of demons that she is able to run towards and escape. If the overlord was intent on cornering her, he should have made sure that all surrounding areas were covered.

Casual Person

Stupidity: Whilst the chaplain and one of the marines are talking in the kitchen, a demon sneaks up behind the marine, stabs him through the back and kills him. The demon then walks up to the chaplain and strikes him across the face and leaves the room to search for the rest of the crew. Despite the intent being to kill the crew, the demon does not make sure that the chaplain is dead before leaving. It just assumes the strike across the face will be enough to kill him.

Casual Person

Stupidity: When Joan and Winslow are walking through Level 2 after the monsters begin attacking them, at one point Joan turns around and shoots at a monster, but she misses and the monster is able to hide. After this she turns back around and continues to walk down the corridor. The monster she shot at isn't dead, it's just hiding, but instead of going to inspect where it ran off too, she decides to walk in the opposite direction, putting herself at risk of the monster sneaking up behind and attacking her.

Casual Person

Stupidity: Just after Joan finds Winslow after he kills a monster, they discover that it was actually a human geneticist, Dr John Carmack, that transformed into a monster, and they realise this by checking his name tag. Even if they didn't know the extent of what happened in the compound beforehand, the monster was still wearing human clothing and its body was still in the shape of a human body, so they should have, at least, realised that it was originally a human, even before looking at the name tag.

Casual Person

Stupidity: When Winslow sees Tarek getting eaten by one of the monsters, he runs up to the monster and attempts to tackle him. Apparently, he just forgot that he was holding a machine gun and could have easily just shot the monster instead of trying to stop him by hand.

Casual Person

Stupidity: When the marines are searching through Level 2 and detect lifeforms, they are about to shoot, which prompts a surviving scientist to run out into the open shouting "Don't shoot! Don't shoot!" This was a very foolish way of trying to get them to not shoot. Running out into the open like that could have prompted the marines to just start shooting out of shock or instinct even if she was going to say not to.

Casual Person

Stupidity: Once the marines have climbed down into Phobos compound, and have entered through the airlock door, they check the control gauge to see if the O2 levels are good. They were aware this was something that needed to be checked, but they brought no protective equipment with them in case the air was unsuitable to breathe.

Casual Person

Stupidity: The marines all wear helmets as part of their protective gear when they go into the Phobos compound, but Bennett and Akua do not wear any helmets at all. They wear bullet proof vests and arm themselves with weapons, but unlike the other marines, they go in without any way of protecting their heads.

Casual Person

Continuity mistake: When Adrian's throat gets slit, he is shown clutching his neck with his hand, then falls from the chair he is sitting on and collapses onto the floor. He is also shown banging his hand on the table whilst he falls over. This same moment is then shown again on the CCTV camera, but here, he is shown falling from the chair and collapsing onto the floor, all while clutching onto his neck the entire time. The moment where he bangs his hand on the table is not shown.

Casual Person

Factual error: The opening scene shows Cassie and Bryan booking their holiday on a laptop. The dates that they book the holiday home are between May 5th 2018 and May 12th 2018, which means the movie is set in 2018. But later in the movie, when Cassie finds the video of Bryan with the two women on his phone, the date is listed as "Sunday, May 7", and May 7th 2018 was a Monday, not a Sunday. (00:01:05 - 01:10:55)

Casual Person

Character mistake: The letter from the FBI containing the results of the blood and semen test is filled with numerous typos. First, on the line "Subject: Result of examination requested", the word "examination" is misspelled "examnation." Second, the term "DNA instrumental analyses" has "instrumental" incorrectly spelled as "insrumental." Third, the line "Reference: Letter dated October 21, 1987", has the word "dated" misspelled as "dateed" and the month "October" misspelled as "Octorber." (01:58:35)

Casual Person

Visible crew/equipment: Whilst Dignan is leaving the motel, Inez gets Rocky to say to Dignan "Tell Anthony, I love him", to which Dignan says "All right, man, okay" and walks off. The following shot after this is of Dignan walking past the side of a building. Right at the start of the shot, for a split second, the reflection of the cameraman can be seen reflected in the window beside him. (00:48:45)

Casual Person