This document discusses various subgenres of thrillers. It notes that thrillers usually contain an intense, fast-paced storyline that keeps audiences on the edge of their seats. The main character often encounters death, either their own or someone else's, as they undertake a quest to solve a mystery. Two subgenres mentioned are adventure/action thrillers, which contain lots of action scenes, and disaster thrillers, which depict events like aliens invading or ships sinking that affect large groups of people. Additional subgenres discussed include medical thrillers, historical thrillers, religious thrillers like The Da Vinci Code, and serial killer thrillers focused on catching a murderer.