I recommend you two novels with highly intelligent and scheming protagonists. They are The Genius Psychologist and Hysteria I. The protagonist of " The Genius Psychologist " was a genius with strong reasoning and logical abilities. He had lived an ordinary life for more than 20 years due to drug suppression, but after suddenly stopping his medication, he was involved in a reasoning story to find the truth of an incident that happened more than ten years ago. The protagonist of " Hysteria I " was a police detective. In the process of fighting against a super-criminal organization, he had to face famous criminals with high IQ and constantly plan to defeat his opponents. I hope you like my recommendation.😗