This is definitely a read for those of you who like the gritty, shameless horror found in fiction. I can guarantee that if the film based on the novel had adapted straight from it, with no bits left out, people would have ran screaming from the theatre, or it would have been banned in some countries. There are some disturbing themes within the book that will linger in your mind, and you may find yourself experiencing various emotions trying to make sense of them. I did at least. It is gory, but the kind of gory you find in your own nightmares rather than in any traditional horror film. Lindqvist has managed to capture perfectly the feeling of entrapment experienced during one's own bad dreams and those in reality, especially in the context of victimisation within a school environment. Both the real world and that of which you would expect to stem from myths collide in this novel, and they co- exist disastrously. Insanity is also a major theme of 'Let The Right One In', and I do not believe any of the major characters avoid undergoing some form of it one way or another. It is illustrated vividly throughout the different events and experiences of the characters, and is incredibly believable. In other words, it is exactly how you and I would react if we were in the same situation.
The take on vampirism was fresh, with one or two old fashioned views thrown in for good measure. I could not help but feel pity for both Oskar and Eli, each with their own torments and loneliness. They emapthise with each other, even if in some ways their woes and worries are on different levels. The romance and friendship is very innocent, without an overdose of sexuality to depreciate it. Not over sentimental at all.
Finally, all I can say to people considering reading this novel is that the story has definitive meaning to it, and major themes are well balanced out. Forget any other vampiric story, this one is taken fresh from the pantry of imagination.