Thriller films commonly begin with title credits over a black screen accompanied by non-diegetic music. Some films start with a teaser of what the film will be about before titles. Tracking and pan shots are often used in the beginning to introduce important characters. Camera angles like low-level framing and low angles are used to depict power dynamics between characters. Common thriller conventions include crimes, danger, mystery, and settings in urban areas involving ordinary citizens facing threats from criminals and psychopaths.