Sub-genres-
Conspiracy - Main character is usually trapped in a fuede witha powerful organisation after making a discovery.
Crime - Usually about the anticipation and execution of a successful/unsuccessful crime.
Disaster - Follows the fight for survival of a particular groupor individual during and after a disaster.
Mystery - Usually about the investigations of a single charater and often their struggle to find the truth, many twists and diversions throughout.
Political - The importance of a single character who ensures political stabiltity of the government which employs them.
Psycological - A vein throughout all thriller sub-genres though focused on in one particular type of film.
Religious - Unravelling the pros and cons of a particular religion and suggesting new theories which could contradict it.
Supernatural - Typically involving ghosts and other inhuman beings which taunt and torment a particular character. A close relative of the horror.
Techno - The catastrophy based around the development of modern and advanced technology.
Conventions-
One of the first things I noticed about the way thrillers are shot in comparison to other various genres was the tracking and panning shots used throughout the film. there was rarely any zooming and the shots are rarely very intimate until later on in the movie. This helps to constantly build up the tension throughout the entire film and also gives the audience a sense of getting to know the main character(s) so that we can make rational judgements as to how they will react to certain stimulus. Though no intimate, a common frame wthin the thriller genr seems to be the close up. This also increases suspense much the same as the panning and tracking shots. Having said this, long shot frames are just as common and help to set the scene around the charcters and give an insight in to character's surroundings. The camra angles are varied amongst different films though they seem to consistently use high angles to, in my opinion, portray the importance between characters. Mise en scene is never nescisarily consistent between films as the location and storyline differ and so I won't touch too much on that although lighting is often a common factor. Depending on the location of the scene the lighting can be made to meet the mood of the scene. Jump cuts are another similarity between many thrillers - filling us in on other events going on at the same time. This is important to give the audience full awareness of the current situation. Sound is, of course, another major contributor to the catagorisation of genre. Thrillers consist of an inconsistent tune - graduating from slow to fast paced with jumps and stops throughout the sounds. This increases the watcher's sense of uneasiness and unsettles the flow of audio and visual display.
-C.W-