From the very start this opening sequence we can tell it is a thriller. People often relate the thriller genre to murders and crimes so as we see the pictures of mutilated corpses and a had circling names and religious references it become obvious what sort of film we are about to see. The use of quick cuts and flashing images adds to the effect of suspense, and the text is deliberately made to scribble on and fade off and on again which is almost hard for the eye to take in something so fast, creating an uneasy feel to the piece. The extreme close ups of the fingers and the razor blade, peeling dead skin of them makes the audience uncomfortable because it places us right next to it. The non diegetic music is very disturbing and has been constructed to create an atmosphere of unease and tension, with very high noises and sudden changes in pitch as the constant technological beat remains in the background.
The use of extreme close ups also makes the audience ask questions as we do not see the person circling or holding the razor blade, because of this sense of insecurity we feel fear, and fear in this case is used as a major overruling factor of the movie as it does stray into the horror genre.