In the opening of Leon , where we see the credits the setting is shown, this is an urban setting which is popular in thrillers. The camera work goes through the streets of an urban setting showing us where the film will take place.
While the camera is going through the streets of the city it shows a sign saying ‘little Italy ’ which could suggest a theme of gangs and violence, it also shows where the film starts. The camera angle shows a reflection in the sunglasses of the main character which could also represent his point of view, what he is looking at. At the beginning you get shown a picture of ‘someone’ (most likely to be a target because we see Leon as a hit-man).
The man character "leon" is seen as a cold hearted person who doesnt care who he hurts which is also common to find in a typical thriller. We see the main character finish drinking a glass of milk (which is a running joke in the film). We also see shots of where the supposed target is being with a bunch of body guards being well protected.
We are shown a shot of a briefcase full of drugs, having a storyline which involves drugs is very common thriller narrative. Once we are a few minutes into the movie the main character is still a mystery to us but we now as the audience realise that he is going after the man in the picture because he is holding a gun (which is typical iconography for a thriller genre) to one of the body guards that protecting the man in the picture. Now there is a shot from inside the hotel where the “target” is being protected, where now all the bodyguards are in a panic and the editing becomes very fast paced because they do not know what is coming next, although it is obvious that something is about to happen. There is a camera shot of the top of the lift which shows what floor the lift is on, this can be compared to “silence of the lambs” because this presents a sense of panic because they know what somebody is in the building but they do not know where or why. It shows the lift getting closer to the “target” and there all preparing for danger.
All of a sudden the lift doors open and a bloodied hand falls out and the bodyguards react impulsively and shoot the hand thinking it was the enemy, but they realise they have been tricked (misdirection is common in thrillers). There is a low shot of one of the bodyguards looking down a stair well trying to find the enemy (this type of shot is usual to represent someone more powerful however in this film that is not the case).
Now all the bodyguards are worried and they are about to leave. Then it shows that even though the main character is outnumbered he is still able to out smart them, this is a very common narrative in thrillers where the main character odds of surviving are slim.
The target and his bodyguards get extremely worry and try to protect the target by going into a closed space that inevitably puts them in even more danger. When the main character takes out the bodyguards behind a screen and you only see part of the main character looking at the target through a bullet hole in the screen, separating the main character from the target, at this point the editing is very fast paced to represent the panic going on in the scene. When the target is backed up into a corner you see a knife appear at the targets neck which shows that the main character got to his target without being seen, which also causes enigma. The characters face emerges and you see him for the first time in the whole opening.

