Definition of Genre: a class or category of artistic endeavor having a particularform, content, technique, or the like: the genre of epicpoetry; the genre of symphonic music.
Any film out there would have a particular genre for instance, drama, horror, thriller etc. however with technology and audience's demands becoming harder to keep up with, the film industry has to try and include sub genres in their films in order to make them more interesting and attract audience. The genre we are focusing on is thriller, and a film that stands out as being a thriller is definitely Deja Vu. it contains the main characteristics for a thriller which are suspense and a good plot. However thriller is is not the only genre present as we have a sub genre of crime, with elements of science fiction.