(at around 1h 6 mins) When Kenny, Mark and Donald first confront Owen at the ice pond, Mark's hands are out of his jacket. When the camera angles to show Kenny, Mark and Donald's faces, Mark's hands are suddenly in his jacket.
There are no, nor have there ever been any trains commercial or passenger in operation in Los Alamos, New Mexico.
The first scene of this movie is the scene where someone is being transported by ambulance escorted by police. During this scene they show two different close ups of the ambulances radio while you hear radio chatter. The radio shown is a CB (citizens band) radio. Law enforcement and EMS do not use CB radios as the are for use by anybody. Emergency services use 2 way radios, they are similar to CB radios but use different frequencies and look much different.
Not only are the paramedics talking on the wrong type of radio, they are also talking on a radio that's not even turned on. CB radios have a signal meter (on the left) that is illuminated by a mini incandescent bulb and they also have a 2 digit LED channel display (on the right, 1-40)
Not only are the paramedics talking on the wrong type of radio, they are also talking on a radio that's not even turned on. CB radios have a signal meter (on the left) that is illuminated by a mini incandescent bulb and they also have a 2 digit LED channel display (on the right, 1-40)
According to the canon of modern vampire stories, the scene where Abby comes in uninvited and begins to bleed to death shouldn't have happened: Owen had already invited her into the apartment in a previous scene, and if a vampire is invited in once they never have to be invited again. But this detail is a relatively new addition to vampire lore, and only applies to specific depictions. Historical mythologies have stated that all supernatural beings are unable to enter a house unless they are invited, but the first novel about vampires ('The Vampyre', John William Polidori, 1819) did not mention this requirement, which was first applied to vampires in 'Dracula' (Bram Stoker, 1897) - but permission was required each time the vampire entered the house. Modern vampire stories in television and film (True Blood (2008), The Vampire Diaries (2009), Buffy the Vampire Slayer (1997)) changed this requirement, such that permission to enter need only be granted once. In 'Let Me In' (and in the source novel and film), permission must be granted every time.
(at around 43 mins) Owen is playing Ms. Pac-Man (1982) in the arcade, yet the sound effects are from Pac-Man (1980).
(at around 1h 40 mins) This movie takes place in 1983, yet the taxi cab that Abby gets into near the end of the movie appears to be a 1986 model. The car has a high-mount brake light, which didn't appear on cars in the U.S. until the 1986 model year.
The Now and Laters seen in this movie have had that logo since the early 1990s. The movie takes place during the early 1980s.
(at around 43 mins) As Owen reaches for some Now and Later candies in the store, boxes of Sour Patch Kids can be seen. The movie is set in 1983. Sour Patch Kids weren't available in the US until 1985.
A Track and Field arcade game is visible in the store where Abby and Owen play Ms Pac-Man. The movie is set in March 1983; Track and Field was released September of that year.
Early in the movie the gym teacher tells Owen to show up after school at 4:00 for strength training. Near the end of the movie when Owen shows up, presumably at the appointed hour of 4:00, it is dark outside. It is never dark out in Los Alamos at 4:00. Even on the shortest day of the year it doesn't get dark until well after 5. Closer to 5:30.
In the first hospital scene the policeman is not out of the room long enough for the events in the second version of that scene (Abby visiting her "father" Thomas) to take place.