Thriller
Thrillers are nearly as popular as romance, demonstrating that people like exploring the darker side of life. People enjoy reading books that cover a wide range of emotions. In contrast to romance, which has warm, pleasant endings, thrillers have darker feelings and conclusions. Crime, psychological, and horror subgenres are popular among thriller readers.
Well-written crime thrillers are page-turners that keep readers interested by keeping them guessing about what will happen next. Dan Brown's The Da Vinci Code, Steig Larson's The Girl with the Dragon Tattoo, and Sir Arthur Conan Doyle's The Adventures of Sherlock Holmes are all prominent examples.
What makes thrillers a popular book genre is their exploration of the darker impulses of viewers. It shows a dark mirror of the readers’ desires, emotions, and deepest fears. Thrillers will always be popular or at least popular till viewers continue to tell dark stories in the deep of the night.