Plot hole: After Eli's guardian is hospitalised for acid-burning his face, Eli hears on the radio that they can't ID him because of his facial wounds. When we see him in the hospital however, only half his face is injured, the other half is fine which would make a mirror composite easy for lab techs.
Let the Right One In (2008)
1 plot hole
Directed by: Tomas Alfredson
Starring: Henrik Dahl, Kare Hedebrant, Lina Leandersson, Per Ragnar
Other mistake: When Oskar finds the solved Rubik's Cube it cuts to a shot of Eli sleeping, wearing a large shirt/dress. However, this shirt/dress is the same one that she takes from Oskar's mother's closet later on in the movie and therefore, she wouldn't have it yet.
More trivia for Let the Right One In