Codes and Conventions of the Thriller genre

Thriller trailers have to have the use of sound and fast paced editing eg. quick shots and the use of different camera angles. The music needs to give tension and appropriate.
The lighting in thriller films is always dark and have the use of shadows. Mirrors and stairs are also a key convention of thriller movies
Some Thriller films dont stick to the conventions of their genre for example: Phonebooth and Devil.
This is where you are in the eyes of the killer and it ignores the standard use of mirrors, shadows, etc. in this way the audience is made to feel sorry for the male/female charecter that is been pursuit by suspect/killer. Throughout these two films there is fast passed editing and flashbacks. these two films many not be classed as thriller becuase the dont stick to the main conventions but these movies play with your mind like a psychological thriller.
Some simple cinventions used in a thriller film are :

Make Audience Think

Plays With Viewers Mind

Flash Backs

Pass Of Time Sequences

Quick Cuts & Change Of Camera Angles

Mirrors

Use Of Lighting To Create Shaddows

From Killers Point Of View

Stairs

Music To Add Tension

Suprises & Twists