Sensationalism and detective fiction emerged in Victorian England, captivating readers with thrilling tales of mystery and scandal. These genres reflected societal changes, challenging norms and exploring taboo subjects while critiquing institutions like marriage and law enforcement. Key authors like Wilkie Collins and Arthur Conan Doyle pioneered techniques that shaped modern thrillers and mysteries. Their works featured complex plots, strong characters, and social commentary, establishing conventions that continue to influence popular literature today.