"Tension is needed to create conflict, and conflict is needed to further a story. This can be through plot, or through feeling. Even your favourite comedy has tension of some sort; Brian has to fight off large crowds that welcome him as the messiah in Life of Brian. However, not every film is built on suspense. That's a completely different discussion altogether.
Some filmmakers love diving deep into the darkest pits of human despair. There are so many ways suspense can be created, thanks to the filmmakers that laid the blueprints out for the rest of the world to gaze upon. These ten films are spine tingling, goosebumps-raising, heart racing works that will get to you no matter who you are."