The document discusses the crime thriller genre of film and literature. It defines thrillers as works that use suspense, tension and excitement to stimulate the viewer's emotions. Crime thrillers focus on the lives of criminals and criminal acts, often portraying them in a glorified way. They typically take place in urban settings and feature police officers or private eyes as protagonists pursuing criminals. The document explores codes and conventions of crime thrillers, such as certain shots, lighting, and settings. It considers whether crime thriller should be viewed as a subgenre or hybrid genre, noting it combines aspects of crime films and thrillers through suspenseful storylines about serial killers and other criminal plots.