(at around 56 mins) When Beth is first captured, the gun held by the business man is a single-stack .45 ACP 1911 pistol (evidenced by the magazine at the bottom of the weapon). A few seconds later, when the children are lined up, the gun becomes a Beretta with a standard barrel. A few seconds later, when the silencer is attached, the gun magically has an extended threaded barrel (to allow attachment of the silencer). The silencer that was used obviously screwed on, which would not attach to a standard factory barrel.
When Stuart places the pendant he took from Whitney on Beth, he places it outside the collar of her blouse. Soon it appears next to her skin, then outside the blouse again.
Duting the short time Todd is in the elevator with the dogs ,his body could not have been as decimated as it was when the door opened.
From a medical perspective, the face-peeling scene is utterly nonsensical. First, the peeled-off face looks like a form-fitting condom, gratuitously flecked here and there with blood. There would be bits of muscle, nerve, etc. Second, the prisoner's gown would be soaked with blood rather than spotted here and there. Third, he would already have lost consciousness before bleeding out entirely.
When the woman asks one of the torturers if he wants to kill Whitney, he had been torturing a man who's skin is cut off his legs. The man is conscious, but he shouldn't even be alive.
(at around 24 mins) After the girls check into the Hostel, the clerk takes their passports, and e-mails the details to various bidders. However, the pictures all show the girls smiling; standard passport rules do not allow smiling or other facial expressions.
When Stuart is on the phone in his first scene, a school bus arrives and his kids leave but they never get in the bus until it leaves, the bus doors never even open.
Not necessarily an error. Both the children and their (presumed) mother leave when the bus arrives and honks its horn, so it might just be an agreed upon signal, since the adult would not be taking a school bus. This is why the door never opens. After the bus starts up, a Jeep Wrangler-type vehicle can be seen departing immediately behind it, carrying the three people.
Not necessarily an error. Both the children and their (presumed) mother leave when the bus arrives and honks its horn, so it might just be an agreed upon signal, since the adult would not be taking a school bus. This is why the door never opens. After the bus starts up, a Jeep Wrangler-type vehicle can be seen departing immediately behind it, carrying the three people.
The three girls enter the hostel at ground level, where the reception area is. The reception clerk then takes their passports and descends a flight of stairs, implying that he is going into the basement. Yet the next shot shows him scanning the girls' passports in a room with windows, sunlight shining in from the outside.
This is not necessarily an error. After entering the building, the scene cuts to them entering a secondary entrance. There is no way of knowing whether they went up a flight of stairs to get to that point. Also, the building might be built into a small hill, so when the clerk descends the stairs, he might be one level down, but on the other side of the building, where the hill has allowed for a room with outside access.
This is not necessarily an error. After entering the building, the scene cuts to them entering a secondary entrance. There is no way of knowing whether they went up a flight of stairs to get to that point. Also, the building might be built into a small hill, so when the clerk descends the stairs, he might be one level down, but on the other side of the building, where the hill has allowed for a room with outside access.
(at around 47 mins) While Lorna is suspended upside down her feet are clearly being held by thick cuffs designed for suspending a person in this way, however when a close up of her feet is shown she is supposed to be bound by some thin rough looking rope. This obviously would not have been possible to film with the actress actually hanging by such a thin rope as the weight of the human body hung by the ankles in this way would have caused injury to the actress.
When Arielle is sliding the scythe over Lorna's skin, the audio is that of metal scraping on a rough hard surface.
(at around 6 mins) When Paxton dreams of the hospital in the beginning, the police officer tells him of a man that was murdered "in Vienna". Actually, the station in which the "Elite Hunting" boss is murdered in Hostel (2005) appears to be a German one (the signs in that station are only used by the Deutsche Bundesbahn in Germany).