Examples of sub genres.
Psychological thriller - the conflict between the main characters is mental and emotional, rather than physical. Examples: The Machinist, Memento, Oldboy
Erotic thriller - Based around sexual desires. Examples: Basic Instinct
Techno thriller - In which technology is described in detail and made essential to the reader's/viewer's understanding of the plot. Examples: Minority Report, Blade Runner, Gojira, The Hurt Locker
Disaster Thriller - The main conflict is due to some sort of natural or artificial disaster. Examples: The Day After Tomorrow, The Towering Inferno
Religious Thriller -Tthe plot is closely connected to religious objects, institutions and questions. Examples: The Da Vinci Code, The Devil's Advocate