Horror is an effective genre that taps into human psychology. It has evolved significantly over time, from early films like Le Manoir du Diable in 1896 to modern blockbusters. Horror films effectively scare audiences and create discussion. Key aspects that contribute to their success include the use of tension, jump scares, disturbing imagery, and addressing common fears. Horror also leaves lasting psychological impacts on viewers and influences society. The genre continues advancing with new technologies and storytelling techniques.